The US states, not the national government, control vehicle ownership in the United States.

These are the presence requirements to own a vehicle in this state:

When you register a vehicle - apply for ownership and permission to drive it on public roads - two costs are due:

These are the costs to own a vehicle in this state.

Sales tax is due where a vehicle is owned, not where it is bought - so owning a vehicle in Montana can save you hundreds (or thousands) of dollars.

9.25% of the vehicle's value

$243

In order to register a vehicle (or renew a registration in this state, the vehicle must meet the following inspection requirements:

Smog inspections are required when you register or renew registration for a vehicle in California. California DMV personnel must verify the vehicle’s VIN if not previously registered in California. Smog inspection must be current to register vehicle. Smog check required for all out-of-state vehicles.