Viral graphics claim that holding the wheel at the top means you are a leader, one-handed driving means you are relaxed, and a tight two-handed grip means you are anxious. There is no credible personality test hiding in your hand position. There is, however, a real safety reason to care about grip and posture.
Hand position is heavily shaped by the driving situation
Traffic, road curvature, speed, fatigue, vehicle design and whether the driver is parking all change hand position. A behavior that shifts every few minutes is weak evidence for a stable personality trait.
“10 and 2” is no longer the only reference point
Driver-education and vehicle guidance commonly favor lower hand positions such as 9 and 3 because they maintain steering control while keeping the arms away from the direct deployment path of the steering-wheel airbag.
Do not sit on top of the airbag
NHTSA recommends keeping at least 10 inches between the center of the driver’s chest and the center of the steering wheel when possible. Seat and wheel adjustment should preserve control while creating appropriate airbag distance.
Two hands give you more steering options when something happens quickly
One-handed driving may be necessary briefly when operating a manual transmission or another control, but routine two-handed control generally provides better leverage for sudden steering corrections.
Use the wheel to control the car, not diagnose yourself
Your grip can reveal whether you are turning, parking or reaching for a control. It cannot reliably reveal your personality. Keep the useful part of the conversation: posture, airbag distance and steering control.