Although keeping your cellphone close to reach when you're driving is a good idea—one that Jack Bauer himself would approve of—keeping it this close to your wheel is probably bad. How close? How's on the wheel itself sound?
A good idea on paper—when you're drunk—since you'd be talking directly into the phone when it's on speaker, but practically dangerous, as many victims of gab-and-hit can tell you. Has this thing actually made it to production?