I have seen it. It's tiny. You never know what aspiring forum contributors are out there and have possibly found a stroller that does. Having no place to store a stroller negates the rear facing seats since the trunk or the backseat will be the only place for a folded stroller now. Baby #3 arrives in a month and a half. And I'm talking about a real baby and not another Model S, BTW.
That is exactly my thinking as well. Our frunk is used to store the full-size stroller 100% of the time with plenty of space for several bags additional bags. That allows the rear-facing seats to be utilized. and I made sure to not get the studio sound package so I have both wheel-well pockets for smaller items even when the rear-facing seats are used.
We only have one child now, and hopefully another on the way, so we can't replace the RWD Model S until all of our children are grown past the stroller age.