OH!!! I just realized that my germy kid probably won't be back at school tomorrow -- which means that I am not a good choice for a ride tomorrow. :(

In case he does end up at school and the ride question isn't settled by tomorrow, I did try what you asked. I stood with my back toward a seat and sat down on it. I ended up with my backside on a seat, but my legs were still down on the ground outside the car. I am not sure how much seat Cordelia needs under her in order to get into a car, or whether this was below or above the bare minimum that she would need. Hm.