I was just reading up on it, turns out some people can't figure out how to make it go in reverse.
The whole reverse/coaster brake thing is confusing, but I'll keep reading.
I never had my hands on one, so i haven't the foggiest. I assumed it takes a special shifter, so when you put it in reverse, the gear isn't connected to the coaster? But, TBH, I haven't a clue.... i'll google it.