Get use to those roads, plenty of those about and are truly awesome.
Well your trip looks simliair to the last two weeks of our trip where we went via Dallas - Amarillio - Alburquerque - Flagstaff - Las Vegas/Grand Canyon - San Diego and LA.
Tips, where does one start. All depends on what your looking for out there, anything goes in America
Dallas, got to go to the grassy Knoll and ' X ' on the road where JFK was shot - Totally humbling experience. Sat on the grass for a good couple of hours taking it all in.
Grand Canyon is must for obvious reasons and if you are feeling brave do the ' Skywalk '. Costs to get there though.
Las Vegas - Mental oriental place. Have you decided which hotel your staying at? Do the gun range there as its the only place in America where your allowed to fire a fully automatic rifle. We went for the Iraq pack deal ( M249 Saw, Berretta, M16 rifle )
A must go to when your in Vegas is the old part of Vegas, go to Fremont Street. One of the biggest light shows, just found this clip on You tube
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Thats just to name a few things to do, just totally depends what your going there for. I see your relativatley local to me so hopefully a Port Solent meet will happen soon and can catch up there
Steve.