Americans are driving their vehicles longer, as the medium age of vehicles has nearly hit 11 years, according to a new study by Polk. Blame a wretched economy and more reliable modern automobiles, but cars and trucks continue to stay on the road much longer than they did 15 years ago, when the medium age was just 8.4 years.

According to a report in The Detroit News, there are other reasons for the change, including a decline in the number of miles driven last year and improved resistance to rust and corrosion. Regardless of the reason for the record-setting age of our American fleet, the news has the auto industry salivating at the prospect of boom times ahead. The National Automobile Dealers Association is predicting that new vehicle sales this year will hit 13.9 million.

“The economy, unemployment are still going to be stubborn, but there’s so much pent-up demand I think the industry is going to have an amazing year,” Toyota President and CEO Jim Lentz told the Detroit News.

How old is your ride? We know that Autoblog readers have more cars than the medium consumer, so join our poll under by respondent how old your daily driver is.