When doing long trips, I either have the left hand on the the top or bottom of the wheel with the right hand on the arm rest, or the right hand in either position with the left arm on the door arm rest. I fidget a lot so I switch positions frequently.

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Seth

1984 300D 225K
1985 300D Donor body
1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!!
1980 300SD 311K My New Baby.
1979 BMW 633csi 62K+++? Dead odo