Tesla Product Engineer interview questions

I submitted my resume at Tesla Motors Career Fair in Fremont, November 2013. Had a nice talking there. About 2 wks later, got an email from team manager to make an appointment of a phone interview. Phone call was great and detailed, then got an onsite for 1 wk later. Flew to HQ and had the onsite. Made a 30min presentation and had 5 1v1s, 45min each. After went home, answered 2 questions for Elon reviewing. 2d later, was offered the job!