CTA Digital, who make all sorts of electronic games and accessories, have decided that gripping the edges of your iPhone or iPod Touch and twisting it left and right is no way to play a driving app.
That's why they invented the Basic Steering Wheel for your iDevices: "[Y]ou can now maneuver
your way through those interactive iPhone/iPod touch Apps with
precision. This wheel gives you the feel of driving a vehicle instead
of making sharp, erratic turns as you twist your iPhone or iPod Touch
from side to side."
For those with no wrist strength whatsoever, CTA thoughtfully provides a version with a suction-mounted support column.
Here's a clip of the basic version in action, but while you watch, ask yourself: was this trip really necessary?