With just about everyone having a $400+ car payment these days, the new commission structure means a whole lot of people will be choosing between eating and driving.
Oh, and as a side note:
When you finance your car over 6 years, you pay mostly interest for a year or two, meaning if you try to trade your car in early, the dealer will kindly notify you that you have "Negative equity" which is a fancy way of saying you don't have a thin dime of equity and in fact would owe the dealer $$ just for them to take it.