[Rain Man]

I had a rental car on a long road trip a while back, and it took me a bit to figure out the adaptive cruise control because I'd never seen it. I'd be on the highway cruising along and then I'd notice that I was going five miles under the speed limit for some reason. I eventually figured out that it was because there was a pokey person ahead of me, and so I would slow down to start a pokey parade with them. I had to switch lanes to get back up to speed.

But it made me wonder - if everyone had that same system, could you end up with a big pokey parade of dozens of cars if people didn't notice and pass? It seems like it.