One week (as long as you don't have to drive for a few days) should be plenty of time. Your eyes will be strong enough, or should be strong enough, for driving by then. However, they do take the clear band-aid lens off after a few days, and I'll warn you....your vision will be fuzzy again for a about 2 to 3 days after that. That's because it roughs up that outer layer that is healing. The entire procedure is painless. Afterwards, when the numbing drops start wearing off, you'll feel them burn (like when your eyes are irritated from a cold, or soap is in them). It's tolerable, but I wouldn't equate my experience to being painful. It's more of a nuisance. The first night, they water profusely while you're trying to sleep. So don't plan on much sleep the first two nights.
I would get a pair of goggles to wear while you're working on cars. At least for awhile. You'll be fine and probably pleased with the results. Like I said, my right eye was good for driving after about 5 days (until the band-aid came off and fuzzied it up again!). Then I had two days of fuzzy vision again until the outer layer re-healed. If you get this done on a Monday, I would say by the following Monday, you'll be fine for driving. The first two days are the most miserable, but again, I wouldn't say "painful". At least not for me.