Both?? if I'm driving fast, both...otherwise one handed like your average 'thug in the hood' 0_o. But seriously: it also depends on the car as cliche as it sounds. It's not the same if you're driving 20 years old WV or a brand new BMW.
Ah, I love these types of random threads! About 8 and 4. Sometimes a little further inward. Often one-handed (right).
To be fair... at the time I was teaching driver's ed, airbags were almost nonexistent. Only high-end luxury cars had them. Passive restraints were just starting to be required and most automakers were offering this awful kludge called "automatic seat belts" which basically you slid in under the seat belts, and they closed around you when you closed the door. They sucked and still required you to manually attach the lap belt. But they were cheaper than airbags, and automakers didn't want to spend the money even though airbags were much better, required no action on the part of the driver, and actually worked. So... it is entirely possible that the switch from 10-2 to 9-3 is because of exactly what you said, the risk of arm injury with airbag deployment. But I thought I'd read that there'd been a shift back to 10-2. Honestly, I don't know what AAA (which, in the US, is the dominant producer of driver education materials) recommends.
I usually drive with one hand at the 12 position. I also sometimes drive with both hands at the bottom of the steering wheel.
I just started driving about a year ago, so I'm still pretty paranoid about having an accident (knock on wood). 10 and 2 usually makes me feel like I might not swerve off the road & die.
Depends on the condition of the roads. Usually 12; or 12 & 7 If the roads are bad, then usually 9 & 3
All over the wheel depending on the situation. When I'm driving in a blizzard, on icy roads, or in heavy traffic, 10 and 2. To you younger drivers, never get careless when behind the wheel and never drive when you are drunk. Use your shoulder check before you change lanes or turn. I never forgot what my driver's manual said... Turn your head before you turn the wheel. It has saved my life on many occasions. I have seen the aftermath of accidents involving young people, including some deaths. It's too sad for words, so please do drive responsibly. The more driving lessons you can get, the better.
Due to the incredible variety of vehicles and driving conditions, I'll say I use any position that's appropriate for the situation. Going 80 mph through the desert in a Ford Raptor is a lot different than eating up the tarmac at nearly 200 mph in a 911 turbo s. I do recall the automatic seatbelts that Chip referenced and they were so awful. A lot of people just unclipped them and went without.