I've been driving around for a book tour, so I've been on the road for about four weeks. And you know what?

I love it.

I don't know if I'll ever move home. My house is too big. Once you're inside it, you have to walk around. In other words, exercise.

In my car, everything I need is at my fingertips. I sit on my butt for miles and miles, yet I feel no shame. On the contrary, my car empowers me. The driver's seat is my cockpit, and I've become the Chesley "Sully" Sullenberger of my own life.

I can land my mothership anywhere. My parallel-parking skills have improved, and now I reverse with impunity.

Bottom line, I used to think of myself as a homebody, but I've become a carbody.

I do everything in my car. I sing at the top of my lungs. I dance in the seat. I take naps, sleeping like a drunk with my mouth open. I know this because when I wake up, my lips are dry and drool encrusts my chin.

I didn't say it was pretty.

I eat whenever I want, from drive-throughs. Or, as we carbodies say, drive-thrus. One banner day, I got my breakfast from a drive-thru Dunkin' Donuts (decaf with sesame bagel), lunch from a drive-thru McDonald's (Asian chicken salad without the chicken), and dinner from a drive-thru Starbucks (turkey sandwich with iced green tea latte). The day they build a drive-thru Sbarro, you'll never see me again.

I eat while I drive, even the salads, but carefully. Here's my secret - don't dress it, forgo the fork, and use your hands.

Told you it wasn't pretty.

On the road I pass lots of other carbodies, all of us doing the same thing. Moms in packed minivans, sales reps with hanging clothes in the backseat, lawyers writing on pads on the dashboard. They talk on phones or text like crazy. Once I saw a woman smoking a cigarette, opening a pack of bubble gum, and driving at 70 m.p.h. It was like watching someone juggle an ax, a gun, and a flaming bazooka.

I always put makeup on in the car, though not while driving because my eyeliner would look like a sales chart in a recession. I keep mascara and blush in the glove box so it won't melt. Then I started moisturizing my legs in the car, and I pack the car moisturizer with two pairs of sunglasses, one prescription and one not, plus reading glasses, a spare pair of contact lenses, and a big bottle of ReNu solution, so that my console is now my Eye & Beauty Centre.

Then I added my Cavalier puppy, Little Tony, to the traveling circus. He wowed the crowds at signings and sold books like hotcakes, so I pimped him mercilessly. It's the least he can do, after I bought him a foreskin.

Those babies ain't cheap.

Little Tony has his own seat next to mine, and his own side of the car with his dog toys (plastic keys and Nylabones), bottle of water (Dasani) with paper cup (generic), snuggly blanket (adorable), and organic kibble (overpriced cardboard). It's nice to have a man around the house.

Last week, daughter Francesca and her puppy, Pip, came along for the ride, and my carhouse was bursting with lipstick, Diet Coke, and Snuggie blankets. Francesca rode around with two puppies on her lap, plus a chicken salad and a drive-thru lemon cake. But in Arlington, Va., the air-conditioning broke down and the navigation system went on the fritz, after decaf got splashed in the buttons. The carhouse was melting down, and our road trip had come to an end.

On the way home, the car was quiet as we drove past the Washington Monument, all lit up, at twilight. A perfect white spire reaching heavenward to touch a blueberry sky, and behind, an orange moon proud as a newly minted penny.

"Look at that," I said to Francesca.

But she was already looking, eyes raised.

Only the dogs missed it.

They were sleeping with their mouths open.