I'm thankful for Texas rest stops. They are always clean and well-kept and have decent parking separate for cars and trucks. When we traveled through Arkansas, this was NOT true, and half the ones in Arkansas weren't even open.
There are two kinds of rest stops: Texas Travel Information Centers and Safety Rest Areas. The Travel Information Centers have maps and local info, restrooms, picnic areas, water fountains, vending machines, and wireless internet (though I've not yet had an opportunity to use that).
The Safety Rest Areas are even better. While they don't have wireless internet, they do have a myriad of other things:
Air-conditioned and heated restrooms, as well as an assisted-use restroom
Larger parking areas, with separated areas for cars and commercial trucks
Information areas for weather and road conditions, maps, traffic-safety and upcoming regional events
Office space for law-enforcement personnel
Enhanced security, including surveillance cameras
Walking and interpretive trails
Play areas for kids
It's just another reason that I love Texas.