UpWrong wrote:If your legs have strength to stand up and walk around then it's reasonable to assume you'd be quicker using them. 'Bent bikes are much more difficult because of the starting and stopping issues of balancing and getting underway. More difficult than uprights I'd say.
Come to think of it the main thing that stops me getting on an upright is the height of the seat, as long as I can get on the seat it should be fine. Maybe a recumbent with 2 wheels with a very low down seat could work, not sure how many of them there are around though.