When you buy a car it's just registered online, takes 5 minutes to do. No actual in-person anything involved. You get a PDF confirming your registration, the dealership prints the plate for you right there and then, nearly every garage has a machine for priniting them. You stick it on your car, drive off, done. The registration document arrives in post 1-2 weeks later, but you don't really need it for much as it's not proof of ownership anyway, it's just for your records.
Literally nothing about buying a car involves actual people reviewing anything. It's all automated, it's all online.
So I'd still like you to explain how exactly are you going to get rid of 99% of DVLA's staff and what algorithm exactly allows for that when using NFTs/blockchain.
>>First of all I need a contract with a dealership, so there is a lawyer involved
Why? I bought several new cars in the past, you read the documents, sign them, the car is yours. Why involve a lawyer? What for?