...but will they indemnify you if you get in an accident?

In Japan at least, you can get a steering-wheel-mounted...um.  How to describe it?  It's a "steering rapper."  So you can practice rapping while driving.

Assume you can use it while going at any speed (which I believe is true).  Defective design?  Is it negligent to use it while driving?

(Via Gizmodo, whose pictures load faster than the link above.)