You are right, I doubt the
You are right, I doubt the wheels will make it. However, I doubt Ford would have taken out those 50 patents on the seats if they weren't going to use them. This car won't be cheap. I do, however, expect the "base" version will have a different rear seat configuration, but I also expect the show car's interior to come in an "executive sedan" edition. Headlights? not currently legal.
After examining the interior shots, the central tunnel looks much more Mustang than Fusion or Taurus, leading me to think it may be a modification of that frame (I have heard from an engineer friend that it was designed to be flexible enough to be configured for a full-size vehicle and also configurable for mid-engine use