I could buy one, but I couldn't properly store it or maintain it so I could sell it in 5 years at a profit.
Jay Leno would have a segment on his YouTube show where they would pick 3 of his vehicles and say what they were worth 5 years ago, today, and speculate on their value 5 years from now (or something like that). His return on investment is way higher than just about any investment you could make. Of course he never sells but that is not the point.