Kaleen Exhibition 2013 is 23 & 24th March in Canberra (Australia) Out takes including high speed (240 fps) crash video starts at 04:55 They use AFX slot car motors with LEGO car bodies. http://www.flickr.com/photos/30303023@N04/5851425287/in/photostream
LEGO train and slot car crashes – Kaleen 2012