This happened today sending one guy helo to hospital. What a bad crash multiple cares airborne at once. Im not a race car fan, but heard about this and saw the video online.
http://www.huffingtonpost.com/2011/10/16/dan-wheldon-crash-las-vegas-indy-300_n_1014336.html
http://www.huffingtonpost.com/2011/10/16/dan-wheldon-crash-las-vegas-indy-300_n_1014336.html