Every vehicle is heavily tariffed. Maybe that is the reason why you very rarely see someone on a Harley-Davidson or Triumph. Tractors are usually imported by the government.
I had a motorcycle accident in Tajikistan. No insurance. It just doesn't exist there. Different country, but similar situation. I was debating getting rid of the motorcycle vs fixing it and going home. The latter isn't so easy when you are this far. The former would incur a 800€ import fee (on a heavily damaged 6000€ bike). The process was far from simple and involved greasing a few hands. This process is documented by Mongol Rally participants who had to pay similar fees for 500€ cars.
In the end I limped to Kazakhstan, got the bike hastily fixed and rode back to Germany. 20000 km later it's mostly fixed and it runs fine. Most importantly, I didn't get hurt.
I guess having 'kit' cars is also a no go. Here in the US, you can buy a chassis and body and all the parts to make a car as part of a kit. Putting it together is below the ability of most Americans but not all. I imagine uzbekis are the same, where there are some really proficient people who happen to be farmers or something else.