That is why I'm looking to sell a lot of what I have, in terms of car-related things. Of my five old cars (all Mopars), both of my sons want the Coronet, which I've had for nearly 35 years. The '78 Chrysler is actually my wife's car. The Imperial and the two D100s only mildly interest them. In the end, I want to keep just two vehicles from five. Keep the parts that relate directly to the two I keep, and sell the rest.
I can never really understand the people that have to have every car they can get their hands on, whether a collection like the one the Imperial ragtop comes from, or a pasture full of parts cars/close-to-it cars. When you die, you give the task of disposing of all those to relatives that may or may not give a $hit about the cars, or appreciate the effort expended to establish that collection. Too many "adult" kids have nothing but $$$ in their eyes and are out purely for the quick buck. Others would rather simply crush the collection and get the scrap money, while selling the property for big bucks. Either way, that is a lot to lay on a surviving spouse that already has a boatload on her plate as a result of your passing.
There are those that say "Who gives a ****? I'm dead! I won't care what happens!" are the epitome of selfish asswagons that quite frankly, deserve death. If a person like that is willing to saddle their survivors with that kind of pain and expense, I'd hate to be that guy that has to "clean up" after their mess.
The collectors I do not particularly care for are those that refuse to let people see their cars, whether as members of a car club, rally, or similar gathering of enthusiasts. Those are the guys that say "I've got it and you can go suck it!". I'm not saying that every collector needs to allow visits to a private collection - far from it. It's their collection, period. It's the few that have vast and impressive collections that hide the cars away, just because they can, and rub it in enthusiasts' faces.