News about Tesla Motors
Safety could change everything.
"Perhaps there will be some future bill that makes a difference for Mars, but this is not it."
Extra cash is needed for its ambitious goals.
Elon Musk is buying some of the shares.
The "Air" is coming in 2019.
Videos about Tesla Motors
The tech giant will join Google, Tesla, Uber and others in the race to build the best self-driving car.
Elon Musk says it costs less than a traditional roof.