To be honest anything on a modern engine is impossible, I had headlights that needed part of the bumper and wheel arch removing, just to change a bulb

Or impossible to buy spares for, or when you can get the spare part it’s often so expensive with shipping that it’s almost worth buying a new appliance on offer with the warranty that comes with it.

Assuming Belarus and russian (kilingrad) borders 626km in length, assume 1 km deep 626km^2, million/626= 1597

Then 1km2/ 1597 = 626

So 1 in every 20x30m space

If only 500m deep then one every 20x15m

That about the size of a house and garden

Not just ai it could also make phone calls