The only way I could think of that a mid-1970's Lincoln Continental limo could wind up in North Korea is through some communist sympathizing group in the west. Perhaps the Worker's World Party or an organization like Northstar Compass.

On the other hand, the opening scene of "Die Another Day" contains a scen where James Bond meets a North Korean military goon who lambasts the excesses of western capitalism, while having a collection of expensive sports cars.