I understand why they went with the single centrally located motor on the roadster. I wonder if they'll go the same way on the Sedan. On the roadster performance was key. The in-wheel motors added un-sprung weight. Unsprung weight being any weight on the car that doesn't go through suspension to get to the road. I don't know that unsprung weight would be as big a deal in a family sedan with a probably top end around 100 mph, and acceleration in the 0-60 in 6-8 second range. I'm not sure what the differences statistically between in-wheel vs transaxle. What I've been able to dig up points to about 10% more efficient for in wheel and quite a bit better braking reclamation for extended range.