While researching the Canadian Peugeot distributor, I came across the mention of CECTEK "Available soon in Canada". A little further digging brought this, the Quadrift 500 (and it's brother, the Gladiator 500 off road model). The link below will take you to some video footage. It takes a while to load but the first half is of the Quadrift ripping it up in the streets - It looks like this may be a street legal quad (in some parts of some countries anyway). Pretty cool in my eyes non the less and something I've dreamed of for many, many years.
http://www.cectekpowersports.com/pr/atv/quadrift/quadrift.htm
Dave