I got the antique tag for my '79 Westy. One time fee of around $31, no initial emission test. The stipulations were that the vehicle could only be used for club functions such as parades, car shows, etc. At no time should it be used for daily use. Since my camper is only used for going to shows, or for camping at either a VW show or a VW campout, anytime I drive it I am either on my way to or on my way back from a VW club function. How in the world can they prove that I am not going to or from a club function? I really don't think they can. But since I don't drive it every day, it's not that much of a concern to me...I'm searching for wood to knock on now, but I have never been pulled over for an infraction in my Westy...been harrassed at a Nazi checkpoint ("Vere are zee papers?") many years ago...but never pulled over.
My '78 Bus passed emissions with flying colors the first year the testing was in effect. This year, after the engine "refreshing", the numbers were even lower. I drive this bus a whole lot more than my '79, so I have the regular county tags on it.
'72 Super Beetle is exempt.
'94 Golf has an OBD (I do believe). It passed with great numbers.
'00 Passat I know has the OBD. It passed as well.