In dual-control
airplanes, the captain always sits on the left side of the plane. In
helicopters, the captain sits on the right side.
Many early American motorized vehicles placed the
steering wheel on the right hand side of the car, even though America used the
keep-right driving rule. This practice was ended largely due to Henry
Ford. He preferred the left side steering wheel. Ford cars adopted the
left hand side steering wheel and, due to their popularity squashed right hand
steering wheel cars in America.