I'm the third 33-year old to reply in this topic (numerologists, unite)
My two cents is that there will be a significant decline in the next generation. As we age and our disposible income increases (we hope) we want the things we couldn't have as kids. For example, the baby boomers that were stuck driving Mom's four-door Dodge Dart with the slant six are now the millionaires who go to the B-J auction and spend six figures on the Hemi Cuda they dreamed about when they were young. We thirty-somethings are the last generation to grow up seeing ACVWs on the road and in showrooms. To the typical member of next generation, there is no emotional connection. This isn't to say there aren't teens and twenty-somethings that like VWs. In their case there may be another connection, such as having parents who are into VWs or the neo-neo-hippies who are looking for busses.
As to the Model Ts and As, I think their quick demise had to do with the steepnes of the development curve of the auto in the first half of the century. When the new models came out with the new features, they were a significant advance (electric starter, anyone? Automatic spark advance?Roll-up windows?) As automotive technology has advanced, the curve has flattened to the point where a new dash light color is the big news. When the Model A came out, it rendered the Model T completely obsolete. It was that much more advanced. Now, you can drive a mark IV Golf or a mark I Rabbit and still have basically the same car.
To the next generation, I'm afraid the Beetles, Busses, et. al. are starting to be looked at the way previous generations look at the Model T. Quaint, interesting antiques, but not the ride to get the girl. Does this mean that in the 2030 B-J auction today's kid who has to drive his Mom's Taurus will be bidding six figures for that '95 Accord with the wing and body kit? I shudder to think...