An LLC establishes a presence for you in a US state, allowing you to register a vehicle there.

In order to buy, register, and insure a vehicle in the United States, you need a presence here. But what if you're traveling, visiting friends/family, or in the US on a work assignment?

A limited liability company (LLC) can act as your presence in the US, allowing you to buy, register and insure a vehicle here.

The US states, not the Federal Government, register and title vehicles.  Therefore, you need a presence in a US state in order to register a vehicle.

Forming an LLC is an easy way to establish a presence in the US state that makes the most sense for you.