Vehicle sales in the U.S. market went up by 18% in April 2011. There was a significant shift fuel efficient vehicles and small cars with gasoline running at over $4 per gallon. Sales are running at an annual rate of over 13 million vehicles for the February-April 2011 period. Helping sustain sales momentum is the aging of the U.S. vehicle fleet- average for vehicles in the U.S. is above 10 years according to G.M. vice president, Don Johnson. GM sales were up 27% in April 2011 over the prior year- with only a 2% increase for pickup trucks and a 50% increase in sales for passenger cars. There was strong demand for the Chevy Cruze compact and smaller fuel efficient sport utility vehicles. Ford had a 16% increase in sales, with strong demand for the new Fiesta, Focus small cars and the new lighter version of the Explorer SUV. Ford's Ken Czubay, head of sales and marketing, says dealers are selling the Focus right off the convoy truck, which gives some indication of the shift in consumer preferences. Chrysler vehicle sales increased 23%, with car sales up 41% in April over the prior year. Some indication of the shift can be seen in the incentives dollars- the largest rebates of $3200 were given for large trucks, according to Edmunds.com. At the same time overall dollars per vehicle for incentives dropped from $2600 in April 2010 to $2100 in April 2011. Toyota sales increased by only 1% because of shortages as a result of the earthquake, especially for the smaller cars like the Corollas and the Prius....