Idea: Invent a cell-phone-signal-blocker for a sunvisor or dashboard. Maybe with a 10 yard radius.
This could save some lives, help prevent some road-rage and make people pull off the road to talk. :)
-crabby3
You're talking about a jammer. :) They exist, but are usually illegal.
As an alternative, I suppose that cars could be manufactured as Faraday cars. :)
-Renegade
Only if you can convince the FCC it's designed for some other purpose, which pretty much means you can't advertise it as a feature.
I seem to recall some movie theater owners trying to get the FCC to let them put Faraday cages in several years back. That worked out about the way you'd expect considering there are almost always wireless carrier insiders on the commission.