Can you offer some practical advice about the correct driving position? I realise drivers come in different shapes and sizes. I am approx 5' 9" and have a car with electric seat movement and memory. The steering wheel is moveable- in/out and up and down. I sometimes find when driving for more than 1 hour on motorways that my shoulders ache. I always keep both hands on the wheel and do not rest my arm on the door/window. I try to sit so that I can hold the steering wheel with my arms comfortably bent and hands approximately level with the tops of my shoulders. My legs are also bent and I can see all of the instruments easily.