I think I read someone stopped at Carlsbad Caverns on this route? I have not been but I have heard it is neat. Fort Davis is pretty cool but I think the people I read about may have detoured. I do not know.
Do you know what route this takes across Texas? I live north of Austin and I always see touring cyclists. I might be able to give some food recommendations if I knew his exact Texas route, let me see if I can dig that up. 
ETA- I found this on Wiki:
The ride along the Rio Grande River into El Paso, Texas, is a treat for bird lovers, especially during migration season, when the birds are flying north or south. Texas dominates this route, taking up an entire third of the mileage. Starting in El Paso, just across the Rio Grande River from Cd. Juárez, Mexico, the route follows the river southward before turning east and heading through the Davis Mountains, where some of the friendliest folks on the whole route reside. Riders pass the McDonald Observatory atop 6,800' (2070 meter) Mt. Locke. There's a visitor center with daily tours, and evening "Star Parties" three days per week. After the Davis Mountains, towns are few and the country desolate, full of sagebrush and tumbleweeds. As riders travel through central Texas, the terrain starts to feel like the Alps, but this is actually the famous "Texas Hill Country." This diverse area serves some great barbecue and was the training ground for Lance Armstrong, seven-time Tour de France winner. Riders taking the spur into Austin, Texas should make sure to go hear some of the diverse music available in the nightclubs on Sixth Street.
The observatory at Fort Davis is wicked cool, IMO. The Fort also is supposedly the best preservation but we ran out of time to see it. And if he is craving ice cream he could get some in the caboose but most of the food was just for fuel out there in my opinion. Also, is he camping or hoteling? The Davis Mountains State park is hands down my favorite campsite. Does he have his stops planned? If he is camping, we do that some and I might be able to help tell him if he picked somewhere that might be sketchy. Also tell him there is no exaggerating how desolate NM and West Texas will be. He cannot be overprepared to be alone out there, it is sparsely populated!
I know zero about touring other than reading some of Adventure Cycling's magazine. If you want to PM me his route through our hill country and ways out of Texas and I might be able to give my biased opinion of just being a tourist of points aroudn Texas. I can't help with much else but Texas. Also when he gets closer to leaving I can ask DH about giving our number in case of a mechanical or a crazy hill country thunderstorm. My husband is weird about that though so I have to get his okay. Since you are on the board he will probably might okay, unless your husband is a creepy ax murderer then no.
Last edited by Aggie_Ama; 01-16-2009 at 07:26 AM.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan