I have done a VXR trackday. The Astra VXR i drove would not go into second gear and Pulled to the left constantly. I Canned the arse of it for about 30 mins The engine temp was hitting the Red for most of the time and the clutch and brakes stank of burning and over use all with 3k on the clock... I,m no expert but i think you would be hard pushed to do as much damage on a motorway unless you crashed the thing....
I did explicitly say providing it was cooled sufficiently and the oil system was doing it's job.