Elon Musk’s boffins responsible for the new Tesla Semi are still at it testing the electric truck, with this latest video showing a couple of prototypes at a Supercharger station.

The two vehicles were reportedly on their first cargo trip, from the Gigafactory 1 to the Fremont plant, and were seen about 132 miles (212 km) into the run, near Sacramento, according to Electrek.

Although one of the prototypes was actually being charged, it’s unknown whether it ran out of juice, or if this is part of the testing phase. Still, the most humble one is said to be able to travel for some 300 miles (480 km) between charges.

This version is estimated to start at around $150,000, but add another $30,000, and the longest range model becomes available, with up to 500 miles (800 km) of driving time. The official specs are indeed revolutionary, especially since they have been calculated with a full load. When it’s not towing a big trailer behind it, the Semi can go from naught to 60mph (0-96km/h) in just 5 seconds. With a fully loaded trailer, the time increases to 20 seconds.

Nevertheless, it appears that truck drivers don’t care about how fast the new Tesla Semi is. According to a previous report, the minimal range, as well as the lack of charging points, are worrying factors.

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