How do you overcome the "road-rail impedance mismatch" problem?

[NickFitz]

thinking of ditching the tube for the boris bikes but haven't tried that yet.

Working in Clerkenwell last year I was rather amused one morning to see a chap riding a Boris bike to the stands by the Betsy Trotwood only to find they were all occupied. He clearly didn't have any idea where the nearest alternative might be and, after standing there in slack jawed confusion for a few moments, headed off down Farringdon Road peering anxiously up side roads