Dealership profits are under intense pressure today and in the coming months, according to a just-released NADA study reported on by Automotive News. U.S. franchised new-vehicle dealerships sold about the same number of new vehicles through June this year as they did the year earlier, but dealers are making less money on them. Even profits on used vehicles, which are typically fatter than those of new vehicles, will narrow because "residual decline is accelerating and depreciation is …