I would say that if we do go mobile, which I think is a great idea... we would definately get to Florida and California. It will depend on how many orders we get in any one area, and how soon we can get several people in one area waiting to justify the costs of sending a mobile shop.
I was incorrect on the electronics. Actually it is an option for stock cars as well. What this is; is a closing system you pull the door to near the latch point and this is a bit like the rolls royce or a high end mercedes or lexus has to pull the door fully closed. We will be installing it on the X1 as well, it makes it so you don't have to "yank" the door closed. I think personally that having a closing system is good for stock GTs, the gtx1 and the GTB.. The closure system is hidden behind the interior panels so it looks totally stock when it is in place, but you get the door nearly closed and it pulls it in and latches it.
As for opening the door if it is on its roof I can offer my two cents and that is, if the car gtb or stock gt is on its roof, you will not be able to open the door. as the clip to hold the roof panel (on the stock car) will keep it in place and with the weight of the car on it, it is just not likely the doors will be able to open. the x1 doors are likely to be able to open if the car is rubber side up, but in general when I think of the GT in any incarnation I remember the sticker inside the door of our Viper RT 10,.. which read, "this car is not equipped with a roll bar, please drive safely"... which I think makes the rule *rubber side down* The car is not easily gotten off of its wheels unless you cram on the gas in a fast corner and break it free.. The GT is very well engineered. (kudos to Kip Ewing again!) I would say that because of the weight balance and structure of the car (again in any of the three incarnations) getting out of the car if it is flipped is most likely by progress of the windshield which will have popped out on any roll.. I will double check with engineering on exiting after a roll, but I would say that the car is not a good one for opening upside down. The hinge, both Ford's and ours are substantial and I am sure it would be complicated to get the door off.
The final GTB will not have the top hinge pin, the only hinge will be the standard door location, you can open quickly and close quickly even with the electronic assist. this also means that the butterfly door will be an option for the x1 cars. We will be installing this on the prototype, I am sure we will be trying to get to it before the rally. I must admit that our primary focus is on the x1 production line right now.. but I think our engineers are primarily focused on the butterfly system and its various complexities.