Engat - forgive me but I can't quite agree with your logic. The wear on an engine that idles for ten minutes outside a donut shop is FAR less than the wear incurred in stopping and re-starting the motor. I've always been told that engines wear very very little once lubricated and that 90% of wear occurs in that short time that oil is absent. Correct me if I'm wrong.
I tend to think of abuse like this: it's not abuse until items are burning, blistering hot, grinding away or flexing hard. MB would not put out any vehicle (these days) that could easily be destroyed without trying hard. From the amount of gas allowed to the cylinders to the amount of rev allowed on the system, there's not a damn thing you can do to really hurt the car AS LONG AS it's warmed up, maintenanced and again, not abused.