Perhaps they attracted buyers who tend to want the latest thing and then move it on? The Baby Doll might tempt some to swap.
A few are definitely being marketed as 'selling to make way for a Baby Doll'; however, my guess is that these are the people who bought the Plus 4 SS to race.
I haven't driven a Baby Doll but the chaps in development left me in no doubt that they built the Baby Doll with a bias toward track use. Whilst the Plus 4 SS can be used on track, it most certainly excellent on road. I haven't seen any customer Baby Dolls but my assumption is that those who want a racer will buy a BD and those who love the dual personality, and ability, of the Plus 4 SS will be more than happy with the car in their garage.
