It's more cost effective to hire a bunch of Cuban machinists to maintain the old cars/build new copies of old cars. If you need to make the project flashy they

It's more cost effective to hire a bunch of Cuban machinists to maintain the old cars/build new copies of old cars. If you need to make the project flashy they can get augmented reality welding masks or whatever. DM(L)S is good for small complicated parts, but for large pieces/large scale manufacturing it's not cost effective (or easy to get the right material properties/do quality control!)