Earlier in 2017, Tesla CEO Elon Musk announced that the company’s much-discussed electric semitruck would be unveiled in September. The world will have to wait a little longer for the first official look at this electric big rig, but an image posted to Reddit could give us an early glimpse at the vehicle’s design.

As you would expect from the all-electric automaker, the semitruck looks aerodynamic, futuristic, and downright elegant. The truck appears significantly shorter than the official teaser photo (above) at first glance, but keen-eyed Redditors theorized that the silver cap on the left could be the truck’s fairing and promptly photoshopped it on. Looks pretty close, doesn’t it? Tesla hasn’t officially commented on the photo thus far, so we may have to wait until the unveiling on October 26 for confirmation. For what it’s worth, Musk said on Twitter it will be “worth seeing this beast in person. It’s unreal.”

The leaked image will certainly bolster enthusiasm for what could be another game-changing product from Tesla. The brand is trying to do for the trucking industry what it has already done for the car industry: Make electric powertrains desirable. But that will be easier said than done.

The Tesla semitruck will have a range of 200 to 300 miles, according to a recent Reuters report. That is adequate for a passenger car, but not for a long-haul truck. Tesla may need to create a denser network of charging stations to meet truckers’ demands. It’s also unclear how much the Tesla truck will cost and whether it will carry a price premium over conventional diesel trucks. Granted, lower maintenance costs could prove attractive to operators.

While luxury automakers were completely blindsided by the Model S, truck manufacturers are prepared for a Tesla assault. Cummins, a manufacturer of diesel engines, recently unveiled a prototype electric truck of its own. Mercedes-Benz parent Daimler is building small batches of electric commercial trucks, albeit in different market segments than the one Tesla is eyeing.

Another company named after Nikola Tesla — Nikola Motor Company — unveiled a hydrogen semitruck in 2016 and plans to build a network of hydrogen stations for customers to use. Toyota is testing its own hydrogen semitruck in Los Angeles.

Regardless of which company comes out on top, zero-emission semitrucks could have a major environmental impact. Commercial trucks cover vastly more mileage than the average passenger car every year, but get much worse fuel economy. Converting semitrucks to battery or fuel-cell power could eliminate a lot of carbon emissions.

Update: We’ve added a new image that allegedly shows Tesla’s semitruck in the metal. 

It’s always exciting to have a delivery on the way, and so it’s massively disappointing when that package doesn’t make it into your hands. Unfortunately, “porch pirates” are common enough that over 15 million people have a delivery stolen from their home each year, according to Package Guard. To protect deliveries when they arrive, the company has created a new product that serves to deter thieves. After a successful Kickstarter campaign, which raised over $45,000 from 381 backers, the Package Guard is now available for pre-order on its website.

Package Guard is a small alarm, about the size of a Frisbee, that can be placed outside your front door. The device clearly says, “Place Package Here,” so that those delivering items know where to set the packages. Once a delivery has been set on the device, Package Guard’s alarm is armed. If anyone tries to remove the package without entering the necessary passcode in the app, an alarm will sound, much like a car alarm.

For those who have home security cameras, Package Guard can be set to work in conjunction with the system. In this case, the alarm will also take a photograph of the person who snatched the package. The image can then be automatically shared with the police or on Facebook to warn neighbors.

The idea behind Package Guard comes from founder Michael Grabham, who was himself once the victim of a porch pirate. He had been expecting a delivery of coats to be distributed to the homeless over the holiday season, but the package was stolen from his front porch.

“With an increasing number of people ordering items delivered to their homes, I wanted to create a simple solution that would solve the problem of protecting a delivery when no one is home,” said Package Guard founder Michael Grabham in a press release.

You can now pre-order the Package Guard and keep your deliveries safe for $69. This represents $20 off the retail price of $89, so if you’re interested in ensuring that your packages stay on your porch (and out of the hands of strangers), this may be a good investment to make.

Update: The Package Guard is now available for pre-order on the company website. 

From solar power to hydroelectricity to evaporation, there are plenty of sustainable energy sources out there that are worth exploring. One that we have not personally come across before? Human tears. That’s the basis for new research from scientists at the Bernal Institute at the University of Limerick in Ireland, who have found that a protein present in our tears — as well as saliva, milk, and bird egg whites — can be used to generate electricity when pressed.

“In our research, we were looking at the property of piezoelectricity in a protein called lysozyme,” Aimee Stapleton, one of the researchers on the project, told Digital Trends. “Piezoelectricity is a property of some materials, whereby if you squeeze them, an electric charge, or electricity, is generated. We know a lot about how piezoelectricity works in standard piezoelectric materials like quartz, but know a less about how it works in biological materials. From the study of traditional piezoelectric materials, we know that having a certain type of crystal structure is important and we were interested to see if the same was true for proteins. So, we grew crystals of lysozyme and found that if we apply pressure to them they produce an electric charge.”

Stapleton said that the team is currently looking for real-world applications for this research. One as-of-yet unexplored avenue might involve finding some specific use case for lysozyme’s unique antibacterial and electricity-producing properties. For example, it may be useful as an energy harvester to support the functionality of biomedical devices such as pacemakers; especially since traditional piezoelectrics are often toxic — as is the case with lead.

Another possible use would involve the creation of a device able to control the release of drugs in the body by using lysozyme as a physiologically mediated pump which works by scavenging energy from its surroundings. Personally, we just like the idea of being able to squeeze out a few tears to recharge a smartphone which has died at an inopportune time!

A paper describing the work, titled “The Direct Piezoelectric Effect in the Globular Protein Lysozyme,” was recently published in the journal Applied Physics Letters.