I've thought about the passengers thing, and my conclusion is: "oh well". Motorists have proven they can't handle the responsibility of not talking/texting while driving, collectively, so I'd consider that collateral damage. If people don't like that, they should complain to all the motorists who couldn't handle being responsible adults when given the freedom to do so. It wouldn't be the end of he world...people got along fine without mobile devices connected to the network before they were invented. Although technology could also help there, by using GPS to identify the phone's location and avoid disabling it on trains or away from roads. It would also technically be possible to use GPS-like technology embedded into cars to identify exactly whose hands the phone is in before disabling it. But I suspect that wouldn't go over well, because your misguided attitude is way too common.

As for privacy issues: hahahaha. You already have zero privacy as far as location when you are using a mobile device. The network knows where you are at all times, and the authorities have access to that often. Get over it or don't use a cell phone if you are so worried. It's not a stretch to say that this information can and should be used for law enforcement, nor is it an infringement on our liberties. You don't have privacy of location in public anyway, and you choose to give it up even in private by using a mobile device.

And there is plenty of evidence. You just refuse to accept it because it doesn't satisfy you. Fortunately, there are experts who know better than you.