If Henrik were to offer a prize (like Elon did) I am sure there will be some takers.
With regards to the EPA rating vs Ideal vs Actual miles on the Model S there are a few things in play here that are not immediately obvious. The Tesla Model S has two charging/battery modes. In order to realize the full 300 "Ideal" miles or 265 "EPA" miles you must first charge the car in "Range" mode. Using this mode frequently will cause unwarranted wear and will prematurely stunt the capacity of the Model S battery. The "normal" mode that most people will use everyday, gives the Model S about 228-240 "Ideal" miles. In practice this is good for 197-212 "real world" miles.
A couple other interesting tid-bits
1. A full charge in range mode will cause regen to be turned off
2. From my experience I feel a noticeable drop in power when in Range Mode when compared to Standard Mode.
With the Karma, it seems as if Fisker only uses 16-17kwH of the full 20 kwH battery capacity . I am pretty confident that there will be a larger battery/6.6kw charger upgrade available for the Karma soon; perhaps not from Fisker directly. Of course this is all rumor, but when I get some more substantial information I will be getting one.