I remember twenty years ago flying into someplace in Florida and finally getting my rental car on the road at 2 AM. At a certain point I was on what was, to me growing up in New England, the equivalent of a six-lane highway.

I open up because no one the was on the road, and immediately get blue flashing lights in my mirrors.

Turns out this "six lane highway" was considered the equivalent of an alleyway and the speed limit was 40.