April Auto Sales Slow Amid Lower Incentives : NPR Car shoppers took a wait-and-see approach in April, easing up on purchases as the lure of big incentives faded and hoping summer brings a new flurry of deals. Ford saw last month's sales rise 25 percent from a year earlier, while GM climbed 6.4 percent. 05-04-2010 by davidmcvee Tags auto, incentives, lower, sales, slow