Mostly, this seems like a cheap way to retrofit gas cars with hybrid boost. Likely, this is a good idea, but in the long run, vehicles that are designed for good handling generally try to minimize wheel mass so the wheel can follow the road better, bouncing up and down while still in contact with the road, instead of bouncing upward with too much momentum, leaving the ground before the springs can push them back down to make contact.
This is why performance cars have mag-alloy wheels and high-performance cars move the brakes from the wheels to the other end of the drive shaft.
For a little more money, they could move the electric motors in next to the differential in the back and next to the transaxle in the front... but then they could save weight by having fewer electric motors, connecting them to the transmission, like the Prius or connecting them to the engine, like the Insight and the Civic Hybrid.
The Prius design limits your transmission options, hence they don't offer a manual transmission. The Honda design disengages regenerative braking if you declutch or shift to neutral on the 5-speed and doesn't allow an electric-only drive mode. Every design has its compromise.