I was at On Semiconductor in 2007, and it was an open secret around the office that Apple was getting into the phone business. We knew because management kept touting the fact that we had $4-5 worth of the overall BOM in the iPhone and that was going to be awesome for us.
Looking back, it was still a big surprise once the details were known. So, a car? Build a roof, sign some NDAs, and do your best.