an option when spawning traffic where you can select the era of vehicles that will spawn. eg, if you select 80s, it will spawn mostly 80s cars, and nothing newer than 1989 ect. could work with different spawn sets for each map/continent.
i was about to say that. we really only have three post-2010 cars, and the rest are like early 2000's and under. late 80's and early 90's is probably the only area where a majority of the cars fit