Americans held onto their automobiles longer during the depths of the Great Recession - a trend that does not seem to have reversed itself, according to a new report from the  Bureau of Labor Statistics Consumer Expenditure Survey. The average age of households’ vehicles increased from 10.1 years in 2007 to just over 11.3 years in 2012.  Further more, the share of vehicles between 11 and 20 years old grew by 25 percent over the same timeframe.