There are three modes: Performance ($50k reservation), Thrust ($250k reservation), and Rocket (invite only). Thrust and Rocket mention cold gas thrusters. Where do you see a combustion rocket engine advertised? https://www.tesla.com/roadster
I'm glad that marketing was able to talk Elon out of modes Suck, Blow and Boing.
I'm glad that marketing was able to talk Elon out of modes Suck, Blow and Boing.