I'm not sure if it'll help people avoid accidents. On the one hand, you might get a few people who would be handling their phone to keep their eyes on the road

I'm not sure if it'll help people avoid accidents. On the one hand, you might get a few people who would be handling their phone to keep their eyes on the road more. On the other hand, it might facilitate phone use in a way that people might use their phone now when they wouldn't have before (because handling it felt too distracting but this doesn't). I think this is a tangible risk. There have been papers published that point out that hands free use isn't anywhere near safe. Side note: not sure why the downvotes or what the other somewhat strident replies are about. I don't quite agree with you but it's not downvote worthy.