the thing with vip cars is that most of them aren't old school cars - they just look like they are (amazing that some of these dated styles are still in production, or recently were).
as rezz said there are very few old cars about. I'd say that old school car owners fall into three categories (generally speaking) - 1. collectors, 2. those who bought them new and, for whatever reason, never got rid of them (older people often fit this category) and 3. those who, for example, had such cars as their first car - and have re-purchased (or held onto them) for the sake of nostalgia.
Even poor people can afford what we would consider 'decent cars' (because even mid 90s cars are often given away because of having no resale value).
here's what I've seen (a few examples off the top of my head) -
* quite a few 80s corollas (surprise, surprise) - the only car, I can think of, from the mid-80s, that is still significantly popular
* a couple of series I-III (sa22) rx7s
* a mk.II supra (one of the HKS turbo versions, no less!)
* the occasional r31, and even rarer, the odd r30
* 1 or 2 prince skylines
* an early 70s rotary (was going too fast to conclusively identify - but was in very good nick)
* a toyota 2000gt
* an old school fairlady z
* an old prelude of some sort (a late 80s one, IIRC)
* lots of old american cars - many done up as lowriders - buicks, cadillacs, that sort of thing
* a lot of wedge shape (1st gen) magnas are still in use in taxi fleets (particularly in kyoto) - though they are badged 'galant', and, IIRC, have a 2L engine