Hey, about ten years ago, my youngest daughter, then age three, put on the best human impersonation of Mt. Vesuvius I've ever seen -- from the back seat of our Mercury Sable wagon. From the headliner to the deepest recesses under the front seats -- there was barf splashed EVERYWHERE. I wouldn't have been surprised to find a pool of it inside the glove compartment. It took me hours and hours, and countless buckets of hot soapy water -- and my trusty shop vac -- to beat back the horrendous stench.
Do this to your new car -- you'll never ever again worry about an invisible parking lot nick or little blob of ketchup on the carpet. And what's more important -- you'll enjoy ACTUALLY USING your car! Drive! Enjoy! Worry not!