A couple of summers ago I rode I40 mostly from Los Angeles to tucumcari nm. It was typical interstate but fun because of the places you go through. You're within reach of the grand canyon and four corners for example. You'll pass meteor crater and the petrified forest! The old route 66 is pretty much obliterated but there are commercial and commemorative pieces of it that are worth a look tucumcari is excellent for example.
(Meteor Crater)
from tucumcari to dodge city I was on us54 & 56. It was fine but nothing remarkable.
I'm sure it's no news to you but watch the weather. I rode it in early-mid may and it was COLD in places, -5C in Gallup. Also, seriously windy on I-40 and tornado/thunderstorms and warnings kept me skittering thru kansas.
Enjoy the trip and the company.
I'm sure I must have posted pictures here if you look back in 2010, maybe you'd get some ideas.
