Man from the South by Roald Dahl

The wife in this story, who is missing three fingers, and the soldier, missing one, would both have a harder time grasping objects with those effected hands. Grasping is a necessary component of many occupations that we use our hands for on a daily basis. Driving, especially while making sharp turns with the steering wheel, is one such occupation that often requires bilateral hand grasping to maintain control. Therefore, driving the prized Cadillac would be difficult for either character that is missing digits. However, there are still ways the wife could steer the car effectively and continue basking in her victory.  Rather than placing both hands on the outer circle of the steering wheel, the effected hand could be placed in a device such as this so she could complete sharp turns effectively without the danger of losing her grasp.