I ordered My Avalanche while stationed in Japan without ever test driving one. I was not disappointed. We now live in Germany and get lots of attention and questions from the locals. It is definately one of the most comfortable trucks I've ever driven and it has no problems getting up to speed on the Autobahn. My only complaint is the speed limiter switch kicks in at about 100 MPH. Parking in German garages can be a little nerve racking with it's size, but it will fit. Since it is the only 4 wheeled vehicle we have here the ability to carry the family or lots of cargo is very nice. We wouldn't trade it for anything.
Folding mid-gate for the option of seating or cargo.
None really, but I would suggest blind spot mirrors for backing up. Also if you need a truck for hauling brush, dirt or anything like that, I wouldn't recommend the Avalanche. The small pieces get into the water drainage system and are difficult to get them all out.