Go Your Own Way

Don't slide behind the wheel until you determine your traveling style. Those who like to go with the flow should meander through back lanes, stopping at antiques stores, farm stands, and mom-and-pop coffee shops. If you just want to get where you're going, choose the faster—and less scenic—interstate route. Most couples throw in a little of both.

Car-ful Packing

Bring a blanket to avoid the you-turn-it-up-he-turns-it-down game with the heater. A cooler stocked with sun-proof snacks—think pretzels, not candy bars—will save you from greasy food at rest stops. Bring plastic bags for trash, and stash a miniflashlight for map-reading after dark. Sunglasses, sunscreen, Wash 'n Dri towelettes, change for tolls, and a cell phone are also key. Last, dress comfortably. After sitting for hours, you'll develop a new appreciation for elastic waistbands.

Safety First

Potholes happen, so car owners should update their AAA membership and stash jumper cables, flare torches, and a neon-colored sign in the trunk. (Dad would be so proud.) Renting? Make sure the company offers 24-hour emergency road service, and keep the number handy.

Map Quest

Get a good, current road atlas. It's more compact than a stack of fold-out maps, and should list approximate driving distances between popular destinations. When calculating driving times, also consider topography: After all, tooling down a two-way switchback mountain road takes a bit longer than racing along a flat six-lane freeway. Rule of thumb: The nicer the scenery, the slower you'll have to drive to soak it all in.

Beds Ahead

Motel hopping at midnight is the furthest thing from romantic, so plan your route and book ahead. Use a reputable travel guide to avoid landing somewhere skanky. Also check cancellation policies—a small inn may require a week, while a larger chain may let you cancel up until 6 p.m. on arrival day. And since you will get lost on those back roads, program hotel numbers into your cell so you can call for directions.

Relax

That said, don't let your itinerary rule your lives. Pass a sign for Live Alligator Wrestling? Go ahead, take that exit. Remember, you are the masters of your driving destiny. Make a wrong turn? Spend a few minutes looking around before diving for the map. You may stumble on the tastiest taco in Texas—or the prettiest view of a Vermont valley.

Honk if you like music

Leaving home without these CDs is illegal in 17 states—and we're not telling you which ones.

Madonna, The Immaculate Collection Take some time to celebrate.

Bruce Springsteen, Greatest Hits "Born to Run." 'Nuff said.

Beastie Boys, Licensed to Ill No sleep till Boise!

Big Boi and Dre Present...OutKast The world loves it when they get down.

Jimmy Buffett, Songs You Know by Heart Or you will by the end of the trip.