> I love the lack of a model year, they are always refining and enhancing the base hardware. If I have a list of a half-dozen refinements I want which weren't

> I love the lack of a model year, they are always refining and enhancing the base hardware. If I have a list of a half-dozen refinements I want which weren't included in the car at launch, how can I tell if a given used car for sale has them? Is there any type of master list of features/changes/dates?