The A4 absolutely offers "active lane assist" (steering) as well as "adaptive cruise control with stop and go" (automatic throttle and braking, all the way down

The A4 absolutely offers "active lane assist" (steering) as well as "adaptive cruise control with stop and go" (automatic throttle and braking, all the way down to stopping in traffic). http://www.audiusanews.com/newsrelease.do?id=2747 http://www.audiusanews.com/newsrelease.do?id=2747 I don't think it's quite as autonomous as Cruise - as noted by others in the thread, Cruise seems to be trying to reach a somewhat scary "good enough that you could read a book but please pay attention because it doesn't work just right yet" plateau, while the Audi system is simply supposed to be a gentle helper of sorts. But the Audi system also works on any highway rather than just pre-mapped areas, and is (for better or for worse) integrated with OEM brake and steering actuators and the car's throttle-by-wire system rather than relying on retrofitted physical systems.