some companies (small ones) have sleepers on their trucks so you can sleep in them after a long day. Just have to look around for those companies.
Also a friend of mine had the same problem of an air leak....I told him to shut her down....pushers told him keep up....end of the day and long...
Naw Im from West Texas....just had some chew in my mouth at the time....and like 36 hours into my drive...end of day it was about 49 before I hit...
Here are some of the trucks you may get in south texas....lol dont forget the dot after the www and after youtube www youtube...