Ok thanks might be an option then!
Mike, stay on I-10 eastbound, turn south on SR90 and stay on that highway for 23 miles when you hit Sierra Vista. The climb in elevation is very gradual, but you will notice the cooler temperatures. Drive the speed limit, be cautious of other drivers, and you should have no issues.
Huachuca City is a notorious speed trap, so definitely watch the speed limit! It goes from 65 to 55 to 45 miles within a few miles.