Good job cmv. I can somewhat relate to your worries and concerns with driving. I also drive for a living. I don't drive a rig, but driving is what i do.
You will find as i did, the poison didn't help with anything. It doesn't help with staying awake, steering , braking and speeding. If you pop the hood you will not find a spot for the poison.
Sad thing is we weren't built to run on it either. All the poison is good for is keeping your addiction fed.
It will be tough for a minute our two, but you can do it. I said minute or two for good reason. That's all you need to focus on. A minute or two at a time.
One idea for you. I go to gnc and buy mint oil. I make mint Toothpicks. I use them while I'm driving. I don't buy them cheap toothpicks either. I buy them expensive 3.00 toothpicks. 250 count. I figure, if I'm quit i can surely splurge on toothpicks. Glad to be quit with you.