When it comes time to pack up the Family Truckster for a road trip, you should set your sights on having a good time, not worrying about your trip's financial tally. You can save a lot of money by finding alternative transportation to air travel, which also has its other headaches. But road trips aren't cheap, either, when you factor in the high fuel costs and wear and tear on your vehicle. Don't forget hotels, tolls, meals and the cost of the fun things you have planned. By the time you get home, your cranky, road-weary family could have racked up a huge credit card bill. Here are a few tips to help you save a little cash on your next trip.