Well, this site really offers a lot of crash vids and many others too.
http://nicotine.golden.net/Movies/ go to the crash section there.
Also found another crash on the main site: A tuned RX-7 crashing at 215mph...
don´t think that the driver survived :x
If you don´t want to search it for yourself here is the link:
http://nicotine.golden.net/Movies/Ra...@215%20mph.avi