American Express is setting out to pump up auto sales with a prepaid gas card. Opinion Research Corporation found that six out of ten car shoppers said a $50 gas card would most motivate them to take a new vehicle for a spin. Of those in the market for a new vehicle, 45% said that a two-years’ supply of gas would most motivate them to consider purchasing a vehicle. They favored gas over zero-percent financing, a $1,000 rebate, a trip worth $1,000 or a $1,000 gift card. To help automakers, American Express Incentive Services has introduced the “Fill It Up Card.” The card is available in pre-denominated amounts and can be customized with a logo. AEIS says its research found that more than 50% of current shoppers said a branded incentive card would give them a more favorable opinion of an auto manufacturer. For more information, visit www.aeis.com.