I totally understand the anxiety about driving! I have no choice but to drive a round trip of about 35-40 kilometers, 4 days a week. I experienced a spin/earthquake 3 times during last year and found it terrifying. My guardian angel must have been looking out for me as each time the road was relatively clear and i could pull over until it passed. They usually only lasted about 20 seconds - but a lot can happen on the road in that time! Whilst I hated having to drive, I also realize that I might never drive again if I avoided it for too long. We live out of town, so driving is a must.
I have been 'almost O.K. for over a month now, and have just resumed driving after a 2 week "Christmas' break. -so far so good, and I no longer arrive back feeling exhausted! I certainly don't think it is a good idea to drive if the dizzies are frequent or you are feeling really spacey. My husband had to do the trips at my worst times, but a lot of the time I was what I call 'functional' ie feeling slightly nauseous, spaced out, 'drunk', those almost subliminal greying out feelings, and exhausted all the time!
The way I coped (I have to deliver and collect work for my Dental Technician husband) was to leave as early as possible after the morning work rush, choose my route carefully where I could pull over easily wherever possible and get it over with as soon as possible. Any shopping that I had to do was also a very quick affair without lingering to check out the shelves. Even if I only needed a loaf of bread - I take a basket trolly , ans sometimes wore my poaroid sunglasses in to the s/market.....working on triggers being additive and accumulative!
A lot depends on where you live, of course......I live in a small/medium sized town, though sadly a large portion of the drivers on our roads got their drivers licenses in a lucky packet - if at all! ALSO, having a toddler in the car is a big consideration!! As James suggests, perhaps get meds of some description to help your anxiety, then try taking short trips on your 'better' days to build up your confidence. You do need to get a handle on your anxiety, otherwise it might start taking over your life. Good luck - and sending good vibes!