well you have to imagine that universal tends to go for rides around 5min long plus a tram would have a very high capacity.Add the fact that its next to harry potter. this ride is being made to suck up people lowering the wait for the rides around it.The harry potter attractions tend to remain very popular for a very long time so anything that can trap people in it for awhile would make the two non fast-pass lines a lot more bearable.Besides we dont know if it will be a tram yet.Just look at kong before more info came out i heard the ride vehicles were either a boat or a coaster and neither were true