I hope this info will help you.
1. Take small steps and you will eventually get to your destination -- A lot of people who have a fear of driving simply give up using their car altogether. This is the way to perpetuate your condition, not to heal yourself. If you feel that you're unable to drive, simply use the car for short periods. Either drive around the block, or to the grocery store, or take frequent pit stops to make sure your fear doesn't build up. By doing so, you're conditioning your mind to gradually overcome your fears.
2. Listen to soothing music while you're driving -- Music has great effect on our mood. Find some music that you can relax to and play it while you're driving. It will lower your overall stress levels and your will enjoy your ride more.
3. Take deep breaths -- If you're ever driving and start to experience one of the many symptoms of your phobia (sweating, stomach aches, nausea), take a few deep breaths. Inhale and exhale slowly. Deep breaths steady the heart beat and help you to relax
Think positive thoughts, leaving no room for failure that you “just can’t do this.”
Take care and I have the freeway phobia too but sometimes I just have to do it.......... you can do it too.