Can cellphones handle vehicle-to-vehicle comms better than radio networks?

It's going to be a long time before DSRC-equipped vehicles are common on our roads.

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[takk825]

But there's hope for those of us who still drive something old-school or for the (seemingly significant) demographic of Ars readers who don't want to drive a vehicle permanently connected to the outside world: hope that looks something like this smartphone-based dashcam app from an Israeli startup called Nexar.

Ok, so why don't people want to drive a vehicle permanently connected to the outside world? Mostly because of privacy issues? How does Nexar address that? It doesn't. Your car is in communication with their privately owned cloud, acquiring data from every user and photos of the cars around them (so it's not just opt-in).

There are issues with the V2V protocol but at least it's making an effort to deal with the privacy issues instead of simply pretending they aren't there. That's if Nexar isn't outright selling the data as a revenue stream.

The only advantage Nexar has going is that, at this moment, it has more users than V2V.

For me it is not so much having a permanent connection to the internet, it is having that connection routed to other systems on my car. It is a security issue. I see very little reason that my cars brakes, accelerator, or steering should be connected to the internet, no matter how "secure" the connection may be.