Buying a car in the US as a foreigner

Hey everybody, first post here, hope to post much more in the future!

Me and my wife are from Argentina and we're planning on flying to the US, buying a car and drive it back home. We've never done something like this before and we're really excited about it. Been doing a lot of reading.

Buying and Driving a Vehicle out of Panama ?

Looking to travel to Panama in the hopes of purchasing a Diesel Truck, which we will then drive all the way home to Canada with the intent on Importing. Both the initial Panamanian purchase and the Canadian import seem pretty clear cut, however there seem to be some issues with physically driving a vehicle out of panama (see link below)

Best country to purchase/sell a car

Hey you experienced road-trippers...

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