Normally you couldn't get much further off list than writing about cycle motors but as the Bugatti clip-on in the museum at Prescott Hill Climb in England is a twin overhead cam with Roots supercharger perhaps you might allow it an honorary place. I believe that it was designed during World War Two when the great Ettore was a little bored. When I saw it, I began to fantasize about which classic bicycle of the period it should go on. Imagine! A bicycle behind which would trail a fragrant curl of burnt Castrol R. Stuart 'Who needs legs?' Tallack in Bognor Regis, England's Last Resort