Over 2.1 million unique visitors interacted with AutoTrader.com from a smart phone last month, a 60 percent increase year-over-year, setting a new record for AutoTrader.com. The number of unique visitors to the core AutoTrader.com site also increased 13 percent year-over-year in July, bringing the total to just over 17.7 million unique visitors, an increase of 17 percent over the same time last year.
