I remember late 60's or early 70's a guy called Owen Greenwood used to race in the motorcycle sidecar race ( saw him at Castle Combe ) using a 2 front wheels 1 rear wheel combo with great success ( actually 2 wheels on the rear bolted together so it was classed as 1 wheel )originally used Imp engines then went on to use Mini Cooper S , they bloody flew !
Hmmmm...
http://www.mig-welding.co.uk/forum/attachment.php?s=71e6911c20d1a36ae6c65f3c5129d6ac&attachmentid=3768&stc=1&d=1212273845