Which is worse for you - riding or driving? Try to take the lesser of the two evils and do that versus the other. It isn't a perfect solution and you are still bound to have some anxiety and stress, but you will at least have exerted some control over a situation you feel powerless about.

If you are less paranoid about driving, take some comfort knowing you will be in control of the car. What lane it is in, how fast the car will travel, and even what station will be on the radio. (If you listen to music...)

If you are less paranoid about being the passenger, try and fall asleep and allow your husband to make light work of the commute. Take the Klonopin if that eases your mind and snooze the trip away.