we don't have enough road to get up to 88
I have just come to realise when Marty says in the classic closing sequence "Doc, you need to back up, we don't have enough road to get up to 88" they actually have tons of road with what amounts to a drag strip in front of them stretching for miles.
https://www.youtube.com/watch?v=fCjsUxbNmIs
It can be noted a car in the distance suggests there may be an intersection but it’s not a Rolls Royce so of course this does not count:)