If anyone out there has made this trip, we'd like to hear about road conditions in mid to late January, and interesting and oddball stops along the way. We are a converted firetruck (long story) towing a 28' trailer.
US Highway 10 between Van Horn and San Antonio is boring with a capital B. Highway 90, on the other hand, is very scenic with lots of interesting sites along the way. Turn right on Highway 90 when you get to Van Horn. If it works with your schedule, plan to overnight at the historic Gage Hotel in Marathon, Texas. It might be a bit of a splurge but well worth it. They have a good restaurant and an interesting bit of history. http://gagehotel.com