Bought mine in Tucson in Nov, 2001 and drove 2000 miles home to Canada in about 40 hours through Arizona, New Mexico, Colorado, Wyoming, South Dakota, North Dakota and into Saskatchewan. Some beautiful country.
I thought my biggest problem would be that I would be stopped regularly because I had no plates on it (only an Arizona temp permit and Canadian trip insurance). I wasn't stopped once .. in fact a cop passed me without even slowing down. Oh, and I accidentally drove into a sobriety check in a small New Mexico town on a Friday night as I took a short-cut between 2 freeways.
The biggest problem was in South Dakota where it was hunting season and I saw several deer in the ditches ready to wander onto the road.
The most bizarre part of the trip was that it was just a couple of months after Sept 11 and the airline wasn't eager to sell me a one-way ticket to the US so I ended up taking a Greyhound bus down and it took something like 54 hours. I got to see Alberta, Montana, Idaho, Utah, Nevada, and Arizona but I gotta tell you .. the characters that ride the bus are a different breed .. I could tell you some bizarre stories!
So, in the span of slightly less than 5 days, what I refer to as "the road trip" must have covered 4500 miles, 10 States, and 2 provinces. The border crossing was anti-climactic .. only about 20 mins to fill out some paperwork. The NSX worked like a charm although the Bose amps needed replacing so the music sort of sucked.