The medication you are thinking of is called bonine. It is much better than dramamine because it does not cause drowsiness. I've used it when sailing, and it works well.
Tips from the sailor: Be hydrated ahead of time. When people get seasick, the causes are generally dehydration and overtiredness. If you eliminate those two problems, people are way less apt to get seasick.
If you take bonine, take it the night before the trip, then again when you get up that morning. If it's in your system ahead of time, you will fare much better. Don't wait until you are queasy to treat motion sickness. By then, it's a little late.
Another possbile remedy is ginger pills. (Like ginger ale -- the ginger root is really good for stomachs, and while I've never used this, I know people who have used it on cruises and like it.)
also, look out the front window, NOT the side windows where life goes by too fast. Watch the horizon, ahead of you, or just bring a pillow and take a nap when you aren't the driver. I do that, just to relieve boredom, because I really don't like being a passenger. Make sure you sit in the front passenger seat when not driving. I like to have air blowing around me (like a window cracked) or something, but that's up to you.
If you like ginger ale, bring some with you; otherwise bring a soda you do like, and drink that. Bring saltine crackers. They are really good at soaking up stomach acid when you are feeling queasy. I don't like them, but when my stomach is feeling seasick ? that's the only thing I want to eat. :-)
Seabands work for some people. They work through the use of a pressure point on the wrist -- I don't know why, and I've never used them. But I've heard people get good results from them. I believe you can purchase them at a pharmacy (over the counter, just like bonine).
Good luck ! I think if you can get past the carsickness thing a few times, you will begin to get past it and won't need medication ALL the time. I have this suspicion that anxiety plays into it a little -- we get anxious because we think we might get sick, and anxiety makes our stomachs queasy, too. I've had people tour the ship I work on, and get queasy on deck when there's absolutely NO waves -- it's in their head. It's kind of funny -- but motion does do something to our inner ears, and when at sea for a period of time, I find I can't stand still on land without feeling seasick. It's kind of funny.