In pictures: A-bike takes to the road
The inventor's vision

Sir Clive Sinclair specialises in miniature inventions - like the pocket calculator and digital watch.

And transport options - like the ill-fated Sinclair C5 of the 1980s.

He first looked into making a miniature bike 18 years ago and says he hopes this one will fill a hole he believes is in the market for "ultra-compact" bikes.

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