group of daring drift trike riders have captured some amaznig footage as they zipped down the world 's steepest residential road on tricycles .
harley jolly , tyson barr and nic roy videoed themselves descending new zealand 's dunedin 's baldwin street on three-wheeled vehicles known as ` slide trikes ' .
videoed themselves descending new zealand 's dunedin 's baldwin street on their trikes .