When i'm out on the interestate, my SDL seems as though it's running better at 80mph. However, it seems I rarely get to go that fast only for short pereiods of time. I'm always running up on someone in the left lane doing 60mph. What really burns me up is that they see you coming up behind them and they just won't move over at all. You have to move to the center lane, if you can, and go around them. It's like they do it on purpose, just to show you that they own the lane. Don't you just sometimes wish you had a button in your car that would give them an electric boost under there behinds to make them move over?