> for many limited-production supercars, their value actually go up over time
It depends.
Daily driver cars are depreciating assets. A supercar in fantastic condition that has little / no miles is an appreciating asset. A Bugatti supercar with 150k miles doesn't really have a large market, so it's likely to take a huge loss to sell in a reasonable amount of time. It might sell faster if it is parted (sometimes rare vehicle owners will pay way over list price to get replacement parts fast so they can get their prized possession working again quickly).
It depends.
Daily driver cars are depreciating assets. A supercar in fantastic condition that has little / no miles is an appreciating asset. A Bugatti supercar with 150k miles doesn't really have a large market, so it's likely to take a huge loss to sell in a reasonable amount of time. It might sell faster if it is parted (sometimes rare vehicle owners will pay way over list price to get replacement parts fast so they can get their prized possession working again quickly).