Although you might not feel like driving wight after, you can do it no problem....the area you're getting inked in problematic for several reasons.
1. being so low there will be a lot of blood pressure down on it and it might want to ooze blood or at least plasma. Spend as much of the first 3 days as possiblr with it ELEVATED above your heart.
2. Being where it is, footwear, pantlegs etc. will rub there. If you're taking a week off I would just wear shorts or sweats and not let anything brush against it as long as possible.
I am covered with ink and if you follow these directions, you'll lose as little ink as possible.
Also:
When you get home (regardless of what the tattoo guy tells you), peel off the plastic or dressing or whatever he put on, then sit on the side of the bathtub.
Use cool water and a mild soap like ivory, gently wash the entire area. I find that 3-4 good latherings and rinsings will get the skin COMPLETELY free of any ointment. You can wash it slightly more vigorously the first 36 hours or so, as there is not much granulation going on yet.
Then gently dab (don't wipe) the water off with a dry towel.
Apply a THIN coat of bacitracin or neosporin (some people have a reaction to neosporin where it makes little red bumps and some ink will come out there) ointment to the entire tattoo. This is where most people mess up and glop it on and the skin can't breathe and heal properly.
Wash it thoroughly and completely 4 times per day, and recoat with ointment... Do this for the first 2-3 days.
On the 3rd or 4th day, depending on how you're healing, switch to a lotion without additives, like nutragena. At this time you can just wash it thoroughly twice a day, but re-apply the lotion as often as needed to keep the tattoo moist- this could be 8 or 10 times a day. If the lotion stings your skin, then go back to the ointment and start the lotion the following day. When using lotion there is much less worry about using too much.
Sometime between 8 and 15 days after the tattoo it will "peel" or slough off a layer of dead skin, and be totally healed....don't pick at the skin, or scratch it at all.. pulling off the skin prematurely may pull some ink out with it.
It works for me. good luck.