1) At most depots, you can still walk up front and check out the locomotive (if you can call a diseasel a locomotive). Try walking up to a 747 at LAX and you're likely to get a LOOONG vacation at a CIA black site ...
2) What, if anything, happens at Denver's old Stapleton airfield? Is it active for smaller planes, a museum, or a bare patch of land?
3) Only once on my many, many trips between California & Colorado have I taken the Interstate between Kingman and Seligman. Otherwise, I always take the "Mother Road" through Truxton and Peach Springs, etc. The last couple of trips I've even found another 10-15 miles of Old 66 that roughly parallels the old AT&SF grade - and a bit of the new - between Seligman and Ash Fork. (Do any of you know if there's a way to follow part of either the original or the realigned AT&SF grade between Ash Fork and Williams?) There are some fine cafe's and classic burger joints along the old road, and it's much less BORR-INNNG than the Interstate. IMHO, the only thing wrong with Disney's movie "CARS" was the lack of a grizzled old stuffed-&-mounted steam engine in the park (#3759?) lamenting that even the RR had bypassed the town, and the Super-Duper Chief didn't stop there any more.