https://www.cnet.com/roadshow/news/musk-shows-tesla-roadster-mars/

The Roadster was Tesla's first car, essentially an electric conversion of a Lotus Elise that the company produced from 2008 until 2012. But the one going to Mars won't be any Roadster. It'll be Musk's own car, one that just happens to be red. It'll even have a passenger, a dummy named "Starman" at the wheel, looking super-casual with one hand hanging out of the window. If all goes well, the Roadster "will be in deep space for a billion years or so," Musk shared on Twitter -- "if it doesn't blow up on ascent." Given this will be the first full test launch of Falcon Heavy, blowing up is a real possibility. But with SpaceX's successes of late we wouldn't bet against the company. The good news is we can all see how it goes live: Here's how.

As to the next-generation Tesla Roadster, no word on when SpaceX might send those to Mars, but with a 0 - 60 time of just 1.9 seconds, lucky owners of the $250,000 electric supercar will be able to achieve escape velocity right here at home.