Read the Highway 1 question in the wrong question, and kept typing different versions of the Canadian border, Maine, New Brunswick, St John's River etc. Until I reread the direction.
I know this is a USA specific quiz, but just as a point of potential interest, SATs in the UK are standard assessment tests (or, historically, tasks), taken by school children at the end of key stages one and two.
But the clue says to go to the end of Route 1. While the first part of the trip from Miami is across the mainland, the majority of it will be through the Keys.
BTW, most of the drive through the Keys is heading more west than it is south.
might be a little nitpicky but the College Board said in 1997 that the SAT no longer is an acronym, but rather a pseudo-acronym (although many people still know it by the former acronym).
Basil Fawlty was sent back to the kitchen several times to get it right. I've never forgotten it either.
BTW, most of the drive through the Keys is heading more west than it is south.