Perhaps its just me, but it seems like a few people may have jumped the gun here. There is a major distinction between correlation and causation. More to the point, just because in x% of accidents a cell phone was involved does not in any way show that by removing that factor you're going to magically stop those accidents. I'd be willing to bet over half of all car accident victims listen to the radio, and yet I do not see any government banning their use in cars.
((yes this is a stretch, but it illustrates my point))