Strange thing here. Could not find a cure for it. In track view (and in car with the AI cars) there is a huge bubble behind my car. But only if the gas peddal is depressed. But not with all the cars. The F2 Sparks have it, the F2 Eve's don't have it. And some other cars too. it suddenly appeared. Maybe after installation of a track or Mod? My GC is a Radeon 6850 series. Anybody can help?