I think once people are used to getting around by opening a smartphone and putting in a destination, there's a lot of potential for offering transport-as-a-serv

I think once people are used to getting around by opening a smartphone and putting in a destination, there's a lot of potential for offering transport-as-a-service more efficiently than a private car the whole way. I've already seen Uber appearing in Google Maps directions, and with a bit more work you could combine that to offer Taxi -> Train -> Taxi for the full journey. Indeed, I think there are a lot of benefits once these systems start being integrated. It would likely facilitate ride grouping, since you'll have a lot of people arriving or departing from the same place at the same time. Combined ticketing could also allow stations to have special entrances for taxis that bypass ticket barriers, since they know everyone inside has already paid.