I've been driving in Houston traffic since auto-pilot was released (downloaded first day - Thursday morning). I'm curious what others have found. Here's how I'm using it at this point: I tried it on 290 in rush hour and gave up. The lanes are too close and I just wasn't comfortable with how close it would get to vehicles in the lane on my right. There are too many abrupt direction changes in the road - the car follows them ok but its just too scary. On I-10 westbound, where 59 and 10 meet, it loses the lane and gives "take over immediately (TOE)" fairly often. If I hit this at 55 mph with somebody in front of me sometimes it will hang, but if traffic is moving 70 mph that's just too fast and I get TOE. (at this junction I-10 does a hard right, then back to the left, all while dropping in elevation and then coming back up - its fairly radical) One place I LOVE to use auto-pilot is on the beltway 8. Its about 5 miles further for me, but I can take it for my daily commute (which 35 miles each way). The lanes are well marked and I get good use out of auto-pilot, with no TOE all the way to/from work. This is making it worth the expense of upgrading to an auto-pilot car. I don't use it off the highway much, but I don't have long distances to travel off the highway. Not sure if others might, so please advise if you care to share your experience. I did experiment with it on the feeders, but the car really doesn't seem to like it much. Also, others seem to be reporting auto-pilot improving. I haven't noticed any change since I started using it. This may be all in my head, as I don't understand how it could do anything better without a firmware update.