Auto sales in the U.S. for September came in at their highest monthly level since 2005 according to Autodata, displaying strength in a major consumer category. Yet according to new survey, the rise in popularity of ride-sharing app Uber is already having a significant impact on customer attitudes towards the purchase of new cars.  The survey, conducted by research-based consulting firm Magid Advisors and shared exclusively with CNBC, found that among 2,400 respondents, Uber usage has grown from 4 percent in 2014 to 17 percent in 2015.