Will Detroit automakers be able to respond to a change in consumer preferences and a shift to cars from SUV's and light trucks? Gasoline prices are expected to rise significantly in 2011, and could approach $4 a gallon. The Detroit carmakers are better prepared now than in 2008. The question is are they prepared enough considering that there was a renewed emphasis on light trucks and SUV's in the lineup of Detroit carmakers in 2010, and compared to Asian competitors in the market whose focus is still on cars. To rebound to profitability GM and Ford took advantage of a pickup in SUV and light truck sales. Chrysler benefitted from a revamped Jeep Cherokee. All three Detroit carmakers sold more light trucks and SUV's than cars in 2010, and GM's car sales went down in 2010. By comparison Toyota and Honda sold more cars than SUV's and light trucks in 2010, and Hyundai does not make any light trucks. Toyota brand US sales head, Bob Carter, says as vehicles are becoming more fuel efficient across all sizes he does not expect the impact to be as dramatic as in 2008. The impact of fuel prices is becoming evident at some Toyota dealerships where sales of Prius vehicles are up significantly. In 2007 before a gas price surge SUV and truck sales were at 53% in the US market, they were down to 47% in 2009, and are now back up to 50%....