HERE'S Travis Pastrana doing an incredible backlflip across the River Thames in front of the O2 Arena.
The America stunt rider leapt 75ft from barge to barge with only a 150ft run-up and 36ft to stop in before plunging into the Thames.
American freestyle motocross rider Mike Metzger suffered a fractured a vertebra attempting a similar barge-to-barge jump in Long Beach harbour, Los Angeles, in 2006.
Pastrana's stunt marked the announcement of a 2018 tour by extreme sports show Nitro Circus.
