when I raced on road tc3, I had some bad crashes involving nitro onroad cars during practice. I no longer race where there are nitro cars.
However I have witnessed some spectacular crashes at the encino velodrom in 6cell modified oval. at over 60 mph. They look exactly like crashes in full scale motorsports. I remember one where car lost traction went up the bank hit the steel railing, body ripped off, the carbon chassis splintered, battery, splinters, suspension/tire pieces showered the track. It was a beautiful thing! probably becz it wasnt my car. I don't have pics but i did catch one crash on video, hi 8, a spun out car was attempting to enter the track on the bank, it slowly attempted to nosed onto the bank perpendicular to the track. the pack came by at over 60 mph and the car vanished off the screen, It look as though it was vaporized.
I race rc vicariously, because it only hurts the pocket book, not me.