Don't know if this qualifies as a real sport but there was this really fun event in Helsinki on the weekend so I thought I'd show you a few shots. 
At least there was some seriously demented vehicles rolling down the hill, some had more success than others. ;D
Flaming Slippers
Red Bull Boxcar Race - August 26th, 2012 by K3ntFIN, on Flickr
World's Fastest Barbecue (Race Winner)
Red Bull Boxcar Race - Winner! Grillaillaan! - August 26th, 2012 by K3ntFIN, on Flickr
A lot more can be found in this Events and Shows Flickr group:
http://www.flickr.com/groups/1945336@N23/
Have phun!
At least there was some seriously demented vehicles rolling down the hill, some had more success than others. ;DFlaming Slippers
Red Bull Boxcar Race - August 26th, 2012 by K3ntFIN, on Flickr
World's Fastest Barbecue (Race Winner)
Red Bull Boxcar Race - Winner! Grillaillaan! - August 26th, 2012 by K3ntFIN, on Flickr
A lot more can be found in this Events and Shows Flickr group:
http://www.flickr.com/groups/1945336@N23/
Have phun!