London, frequently. Try getting a cab from Hammersmith out to Roehampton and you'll get a stream of "I'm not going that way" responses. Simple economic reason i

London, frequently. Try getting a cab from Hammersmith out to Roehampton and you'll get a stream of "I'm not going that way" responses. Simple economic reason is that the driver is unlikely to pick up a return fare (source: talked about it with a taxi driver)