Just recently saw the X concept and I am not impressed. The first thing they focused on their presentation are the falcon doors.
1) The biggest question regarding safety issue in a scenario where a vehicle flips and lands upside down. Lets say there is a fire on the front end or the front doors are jammed, how will rear passengers open their doors to escape?
2) Some exotic cars have gullwing doors, but are not driven all season. This X is marketed as an SUV, so it will be driven all year round. In a scenario where there are lots of snow on the roof, when you open the falcon doors, the snow will go crashing down like an avalanche through the door sill in the middle. It will be inconvenient to constantly be reaching up to clearing snow off the roof top, especially for shorter people.
3) The rear 3rd row seats are too tight for someone large to enter/ exit without 2nd row folding seats. These are some of the concerns I have about the X concept design.
4) Dash looks the same as Model S. I was hoping they change the styling to distinguish it apart from the S. Just a thought.