awww, that's a terribly flawed arguement.
they didn't even have cell phones in the 70's...
it's only common sense that some people are able to use a cell phone and drive very well. but it's also common sense that many, many people cannot. it's just too obvious.
like i said, i almost always believe in the case for more freedom and more personal responsibilty. but since the thing you're doing can (and does everyday) easily harm or kill, you have to err on the lower demoniator.
of course, i think it's not as applicable in less populated areas.
hmmm, didn't anyone ever see jiminey cricket when they were young?