Between 1995 and 2001, the proportion of those earning less than $45,000 a year buying new vehicles dropped 9 percent while the share of new vehicle sales by typical luxury vehicle buyers -- those with an annual income of more than $75,000 -- has soared 16 percent, an analysis by General Motors Corp. found, according to the Associated Press. The reason for the shift, according to AP, is affluent buyers are choosing more expensive luxury cars and sport utility vehicles, while entry-level customers are either putting off purchases or choosing used vehicles.