Photo-Illustration: the Cut; Photos Courtesy Katie C. Reilly “Why does our car look so dirty?” my 5-year-old daughter, Fianna, recently asked after hopping into the back seat of our Jeep at school pickup. We watched her friend slide into a Back to the Future–looking side door of the blue Tesla in front of us before I responded, “This car is superspecial.” We’re both right. There are deep white lines on the passenger side from scratching the car against the mailbox while trying to reverse out of our driveway. The crevices of the back pleather seats are filled with cheesy crackers, apple sauce, and pretzels. Baby wipes, small Frozen dolls, and…