<human>:  Why did Elon Musk leave PayPal?
<bot>: Elon Musk left PayPal to start Tesla Motors. Tesla Motors is a car company that makes electric cars. Elon Musk founded Tesla Motors in 2003, and in 2008 he made the first electric car, the Tesla Roadster. The Roadster had a top speed of about 250 miles per hour, and it could travel about 100 miles on a single charge. The Roadster was the fastest car in the world, and it could go from 0 to 60 miles per hour in 3.7 seconds.