From Peter Tomkins via email:
Hi, my nomination for the cool wall is the Di Blasi trike-it has enabled me, an incomplete paraplegic, to cycle again. It folds to the size of a suitcase, fits in a small hatchback car, so you can take it anywhere (preferably traffic free!) to cycle. I have used it for a year now, improving my balance and stamina.There is also a battery powered model,for those who hav’nt [sic] got the power in their legs. It takes a bit of getting used to, particularly in terms of balance, but it is well worth it – you can see some spectacular countryside – I use the old railway tracks converted to paths, they are quite level, and have car parks dotted along the way. I use cycle shoes with cleats to keep my feet on the pedals – again takes getting used to, but worth the effort.
(Design Zone Cool Wall nomination)