It is a sightseeing attraction!
By A Yahoo! Contributor, 4/23/10
The Upper Ferry is a fun way to get out onto the river. Yes, it is a shortcut and a quick ride, but it is unique to drive onto a small, bobbing boat. If you want a longer ride, turn around a couple of times and go back and forth. There are usually no lines and the captain has nothing else to do all day!