This is just rail with person-sized vehicles. Maybe you can dub it "modular rail" to make it easier for people to grok, but it's not that weird. Also, you could

This is just rail with person-sized vehicles. Maybe you can dub it "modular rail" to make it easier for people to grok, but it's not that weird. Also, you could have them run on the existing subway system and just build off-line stations. Though before you do that, you should take into consideration designing the pods so I can take my bicycle on it, or my dog, etc.