I take it you haven&#x27;t driven a motorcycle.  I can ride one, at speed and around corners, without touching the controls.  Remember that the rider may represent 30+% of the vehicle mass.  Moving your weight around on the bike has as much control over direction as the handlebars.  Unless you are going to strap the rider into a seat (ie make it a car) attach him to a hydraulic arm, or install a 200lb gyro, no machine can take directional control.<p>This all comes to a head at the transition point of countersteering, where the controls reverse around 20ish mph.  The rider&#x27;s balance controls whether turning the handlebars right means right or left.  If the rider isn&#x27;t in sync with the autodrive, everyone is in the ditch.