If you want to make a car spin in the air, compressed gas is a good way to do it.

There is no simple answer because both companies represent different types of bets. BYD is a bet on a proven operating model that's expanding worldwide. On the other hand, Tesla is a bet that the company will become something much larger than an automaker.

Tesla has unveiled its new Roadster sports car, which can thrust itself up in the air. But drivers shouldn't expect to take it for a spin anytime soon. Elon Musk's car company this week debuted the latest bells and whistles of its second generation Roadster — chief among them,

At the Roadster launch, Elon Musk said it will be the "only manually driven car that Tesla makes." We don't know the price, but it's not cheap.

Tesla’s Roadster comes in Performance, Thrust and Rocket variants, with features ranging from active aerodynamics and suction systems to cold-gas thrusters.

The California Highway Patrol released dashcam footage of a collision caused by a Tesla in self-driving mode that injured two officers in Solano County this week.