Buy a Porsche as an Investment

… At least in Germany:

To better compare vintage cars with other asset classes, the bank some time ago started the OTX Classic Car Index, comprised of vehicles that are at least 30 years old and come from manufacturers in southern Germany where Suedwestbank is based, such as Audi, BMW, Daimler and Porsche. From the start of 2005 to the beginning of 2018, the OTX quadrupled, easily beating the 204 percent gain for Germany’s main stock index DAX.

https://www.bloomberg.com/news/articles/2018-07-09/vintage-porsches-683-gain-fuels-returns-in-carmakers-homeland