The government's proposal to raise the fleet average of vehicles to 62 MPG was a hot topic at the annual National Auto Dealers Association convention. One analyst says that used cars will outsell new ones by a three to one margin this year. Indian automaker Mahindra receives a shockingly poor rating from the U.S. EPA for its diesel pick-up truck. All that and more, plus a look at the new Hyundai Elantra.