Elon Musk teases a flying version of Roadster supercar. Is he serious?

Tesla surprised the world last week when it revealed its Roadster on the same day it debuted its much-awaited (and much-hyped) electric-powered semi truck. Founder Elon Musk claims the car can do 0-60 in just 1.9 seconds, which would make it the fastest production car, and will have a 620-mile driving range.