eisenberg is an ultra-high-speed motorbike racer. he holds the guinness world record (2 way average in a mile) for the fastest turbine-powered motorbike at 225.4 mph and . and naked motorbike (no fairing) in britain also at 225.4mph. he holds the world land-speed record for the same motorbike, with a 1 way peak top speed of 234.01 mph, achieved in may 2018. the motorbike was powered by a 580hp rolls royce c20w engine which comes from the agusta 109 helicopter.