Well, this topic is bound to raise some flames...
I'm just curious how fast you have driven in your SL? I've not tried to check my top speed, and probably won't, but I've noticed cruising the freeway at 80 is very smooth.
Heading to Tucson for a couple of day trips coming up, and if I can borrow someone's radar-detector I might just see what she's got at 162,000 miles!
(Disclaimer: I don't agree with going over the speed limit, and all the safety issues or legal issues with it...just thought it'd be fun to see how fast folks have gone...)