What the letters mean

["MPittwood@compuserve.com" <MPittwood@compuserve.com>]

List

I just love it when someone feeds me the first line ................ 

snip  "try to explain to someone who is 
unfamiliar with the sport (but into other types of racing) what the 
letters after the car number represent on a record setting car and see 
if you get anything other than a blank stare".  Wes.

Just another reason why the International governing body does not have
anything other than capacity divisions or weight divisions (LOL a great
deal...)

Thanks
Malcolm Pittwood, Derby, England