Steering 2600lb at 75mph must not be as hazardous as steering a 2-10lb at 40-80mph, Cause ~ $50k coverage will get you driving 45mph about 5' from a 13yr kid in the Bike Lane, one sneaze away from killing him.
Ever been a few feet away from a 12 year old kid operating at helicopter with carbon fiber blades spinning enough RPM's to decapitate a person? I have. Not only do you have to depend on that person not to hurt you, you have to depend on his servos, battery, linkages and his ability to fly the thing. One small glitch and it could be all over for someone.