I only keep maybe half a dozen games on my iPad at any given time. Bus Derby had been one of them for the last two years - it was that good. Unfortunately, this last update has ruined what was one of the top racing apps out there. Now there are full screen ads. There are banner ads (top and bottom) *during* every race. Thanks to what I assume are the ads loading in the background, there is random lag during every race. Randomly freezing for a second or two makes it nearly impossible to have a clean run. And worst of all, the latest "update" brings more full screen video ads after very race. Get rid of the oppressive ads (or offer an option to buy out of them). Until then, another one bites the dust.