This is a close-up of Nancy on her Junior TravelScoot. Nancy is 5'2".
I bought the Junior TravelScoot and I love it. I am 5'2" and it fits me very well. The regular caused me to feel strained in my arms and legs because of the stretch. The only con is the battery sets differently so I can't see how to use two of them.
I am only 4' 11" (and shrinking LOL) and I had a hard time trying to decide should I get the Jr or the full sized. I did get the full sized and I fit on it just fine.
When I went on my cruise I got one of the regular rooms, but as Vroom is a junior size, she rolled right in without any problems.