I had this 11 years ago when I was 45 - it is scary when it happens but it isn't as disastrous as it probably feels at the moment.
You will be able to drive again, the macula provides the fine detail of your vision but the rest of the retina provides the general vision and this is what is used more when driving. Admittedly trying to work out unfamiliar road signs is more stressful as that does need a bit of fine vision!
If your surgery & positioning goes well then you should regain some fine detail vision in your eye. I couldn't even read the first line of the chart when I was diagnosed but by 6 months after the surgery I could just about read six lines (with a bit of squinting...). The positioning , although tedious to do, is absolutely key to your future vision. The gas bubble (tamponade) presses against the retina and macula keeping it as flat as possible, the more effective this is the better your chances.
It is a fact that you won't regain all your sight but it is amazing how much your body adapts - your other eye will learn to compensate and will work harder, and then you just get used to it. Threading needles is a problem for me, plus putting eye make up on my good eye can end up - err- 'creative (!) but otherwise I barely think about it now.
It is a long recovery process though, you will be blind in that eye until the gas bubble disperses (about 6-8 weeks) plus I had some dark vision spots because of the ILM (Internal limiting membrane) peel they did which they warned me would take up to 2 years to disappear completely - and it did, but in all honesty the surgery was so worth all the hassle because of the amount of sight I regained.
The hole is caused by the jelly that is in your eye sticking to the macula as it naturally shrinks through ageing and causing it to rupture - the scan of mine looked like a child's drawing of a volcano at first, it's more like a slightly rutted field now - so it might not have been anything to do with the laser work you had, it may just be bad luck, it was with me
Don't despair - things will get better than they are just now.