I'm thinking, if and when that ever happen, we will all be surprised how fast our our "spot in line" numbers move up the ladder. Given all the folks that are no longer interested, and have moved on.
There will be some losses however when this vehicle actually moves into production the vast majority of reservation holders will buy them as they will be in demand as a unique, and relatively inexpensive, new thing that nobody else can buy for a while. Remember the vast majority of reservation holders are not really following along very closely and not as anxious as this online group, there will be people who will not want it but will buy it knowing they will be able to resell them instantly at a profit, and many of the people who are currently down about EM or nay saying are just being fair weather fans and they will return to the flock when the weather looks better. For EM this small lost percentage will not matter at that point as the reservation would have already served its purpose and EM will be able to add several reservations for each one lost as the fence sitters and new comers join in the fun after it is obvious these will be built.