(REPOST: The guardian)

Elon Musk unveiled Tesla’s first electric semi-truck on Thursday evening at an event in Los Angeles that also included the surprise reveal of a new Tesla sports car.

The new Roadster, which has the same name as the first electric vehicle produced by Tesla from 2008 to 2012, emerged from the back of one of the trucks at the end of a presentation that focused largely on the economic and performance needs of truck drivers.

“The point of doing this is just to give a hardcore smackdown to gasoline cars,” Musk said. “Driving a gasoline sports car is going to feel like a steam engine with a side of quiche.”

While the sports car provided a jolt of excitement for Tesla enthusiasts, much of the event focused on pitching the truck to truck drivers – customers with very different concerns than the average Tesla owner.

In typical Musk style, the CEO had hyped the truck on Twitter throughout the week. On Sunday, he promised that it “will blow your mind clear out of your skull and into an alternate dimension”, while on Wednesday he teased that the truck “can transform into a robot, fight aliens and make one hell of a latte”.

There was no espresso machine to be seen, but Musk did promise a laundry list of features that he claimed would ensure the overall cost of ownership will be 20% less per mile compared with diesel trucks. Among them: faster acceleration, better uphill performance, a 500-mile (805km) range at maximum weight at highway speed, and “thermonuclear explosion-proof glass” in the windshield.

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