I think the only option with real value is #4. The WVU pods are really nice for ferrying students allll the way from their dorms and apartments to the enormous football stadium. A place like Morgantown, WV, is pretty much using every square foot of land it can, so parking is out of the question. But let's face it, getting to ANY stadium on game day sucks when you're sharing the experience with tens of thousands of people.

Only problem is that it's a very specific use case and is likely only to have seasonal ridership. And any example that can be used to show why something can be built is one backfire away from being a reason not to do so.