While I like the concept of a 4-wheel-drive DIY hybrid, it's going to be more efficient as just two-wheel drive.
There's also a point at which an engine mechanically driving the wheels is more efficient than a serial-hybrid, which is why the Volt DOES have a more where the engine acts as an engine, instead of a generator.
By running the engine to the transmission to the DC Series-Wound motor, it minimizes the driveline the minimum number of components needed for a Hybrid, yet still allows either system to run independent of the other.
Of course, all of this this THEORETICAL. I highly encourage everyone else to build alternate flavors of hybrids, and then we can race them against each other!
