[mc32]

That's a good point, though keep in mind in some countries older cars are taxed heavily and some jurisdictions are considering phasing out older cars (not allowed to repair major components). Probably won't be the case in the US, but who knows...

[seafoam]

Emissions requirements create this same result in many parts of the US.

[bombcar]

You can usually get into a "vintage/collector" vehicle class at some point, but some states prohibit those being driven "regular".