Timely for your summer road trips, is U.S. Patent No. D183209 by Herbert Fast on a Combined Rosary and Steering Wheel:

This steering wheel even includes a Saint Christophers medal in the center! If this doesn’t keep you safe, you should probably stay home.

A few months later, another inventor, Charles W. Marker, solved the after-market problem with U.S. Patent No. D184365 on a Steering Wheel Cover: