Automatic transmission for wheelchairs

    Why not provide an automatic transmission system for traditional wheelchairs?
    The wheels can be attached to conventional wheelchairs. They will able to recognize the movements of the user. The wheels can then choose the correct gear for moving up or down hills and across rough terrains by monitoring the user's speed and how hard they are pushing. Because the wheels are automated, the user won't need to expend any extra time or effort in changing gears.