Smartphones are incredibly addictive. I played a game with Laurel on the freeway when we went on a longer road trip a few weeks ago: Look in each car and see if the driver is on his phone.
Shockingly, probably 1 in every 3 drivers we saw driving on the freeway had their phone in one hand with the screen on and would check it frequently. When we hit slowdowns, probably 1 in every 2 LA drivers had their phone in their hands.
Smartphones and the apps on them like Facebook, Snap, Instagram, Pinterest, the games, etc are all getting more and more addictive all the time.
Traffic deaths have spiked because of smartphones and I think traffic deaths will continue to escalate rapidly until fully self driving cars are here.