The process took 3 weeks. I interviewed at Tesla (Palo Alto, CA) in Jan 2017
Interview
One excellent recruiter was pretty motivated to find a team at Tesla that was a good fit, even if outside of his own coverage.
First recruiter connected me to a second that led to onsite interviews.
Interview questions [1]
Question 1
(Describes a big technical challenge) "what can you do to solve this?" Not as open ended as it sounds, the described problem is real