So the analogy does not fit in my opinion. Research shows social media to be addictive, let alone pornography. Driving is not addicting (although maybe some would disagree!). There is not a concern that they'll start driving and never come back. However, teens getting sucked into social media and isolating themselves from the rest of their family/lives is a very real thing that does happen. I am also not aware of research that driving accelerates depression or anxiety among youth, or fuels sexual promiscuity--jokes about the backseat notwithstanding. Yet smartphones contribute to all of this (and no I will not cite the research studies here, but you can see my previous posts where I have done so ... my research area is media and psychology, so this is an area I think about a lot).

Driving is just how to get from point A to point B. I wish teens thought of phones the same way, but they clearly don't. It's not just a tool for a singular purpose like making a phone call or sending an email, it's an integrated part of their lives (speaking more of the social media and the apps on the phone), and that's the concern.