The Miami Down Town People mover will take you around Down Town for 25 cents. These unmanned elevated vehicles are fun for a quick tour of Down Town. For 25 cents you can ride all day and they provide a nice elevated view of the Down Town area. It is fun try it.
Metromover is a free automated people-mover system that serves downtown Miami from Omni to Brickell and connects with Metrorail at Government Center and Brickell stations. There are 20 conveniently-located wheelchair-accessible Metromover stations.
This is a single-car self-moving little train which runs above streets. Ride is only 10c, and it goes in a loop which allows you to see the older part of downtown and glimpses of the sea and the more modern area along Brickell. Worth a ride if you have time.