Fisker have only revealed the
Fisker have only revealed the Nina design to investors. The Surf is essentially the same vehicle as the Karma, with some minor changes to the rear end; but the Nina is quite different, with a BMW engine, one rather than two electric motors, and a transmission. It's likely to have a shorter wheelbase and not be as wide (and hence weigh less and get better e- and gas-mileage).
I wonder whether the transmission idea will work. Tesla could not get theirs to work; the electric motor was too powerful, and kept breaking the transmissions.