Most popular vehicle for people making over $200k annually
http://www.cnbc.com/2017/03/03/americans-earning-over-200000-a-year-prefer-this-vehicle.html At least we have an idea of who is pushing up the price of new trucks.
Forum Discussion
I have no idea where my income would have to be before I would buy an expensive vehicle for personal use but I can't imagine wanting more than a Cadillac Escalade even if I had an endless supply of money.
