Will probably be OK. The vast majority of people are daft enough to join a queue at the Amex, no matter how long it is. The main problem would prob be arranging a picking-up point.
It's all about the apps now, whether it be getting a takeaway or going to the gym or calling a cab. If it's not via your phone, it's nothing at all. It's all about the phone. More than a bit pitiful really :rolleyes:
Can't see the taxi drivers taking this lying down. They kicked up enough of a stink a few years back when somebody tried to introduce a tuk-tuk service in town.