These are still the early test builds. Full-up pre-production builds won't come for a while yet. Even those are vehicles that cannot be sold (although they can go to certain employees within Ford on a non-sale basis). These pre-production units are the ones that go for serious testing. This is also where they iron out the stages of assembly line production to prepare for full assembly line production. However, the assembly line doesn't start up like a Lightning, it accelerates very slowly. That's part of why so few units will come out in 2022.