The South Louisiana-based turbine company is at it again. You see, someone once told them they couldn’t make a street-legal motorcycle with the same engine used to power jets and helicopters. They took that as a challenge. As a result, the Y2K Superbike was born. Well, those crazy Cajuns are at it again, because apparently 320-horsepower and 425 pound-feet of torque wasn’t enough, so the factory put together the 420 RR. No, that’s not a clever Mary-J reference, but it is how many ponies the diesel/kerosene-fired Rolls-Royce Allison gas turbine cranks out. This is backed up by an unbelievable 500 pound-feet of torque that absolutely shames everything else on the market by a significant margin.