We rode from Harrah's to the MGM Grand on this contraption.
It is nothing like DC's Metrorail in that a day pass is $5.00 for unlimited rides. There is only 1 line. And it wasn't crowded. Oh yeah, it worked!
Similarities: ticket driven turnstiles; oddly placed seats; automatic star trek doors; strange odors emanating from random places at random times; proportionate number of brilliant out-of-towners who can't seem to get their ticket in the slot on the turnstile; and proportionate number of beggars/vagrants/rats.
Its open 19 hours a day. It's not a limo, but it can get you where you're going. I'd ride it again. It's ok.