Tummy Driving

Few months back, we went to Pune for a Trekking. So we booked a Volvo  bus for the journey. The Driver of the bus was very fat and he had a very big tummy. When he seated on the driver seat,his tummy was colliding with the steering and he was dis-comfortable in the seat. So he was shaking his body.
We thought, he was driving the bus with his tummy not with his  hand...
This can be   called  as Tummy Driving.... Isn't it?