I have to agree here. Perks primarily. Even if an S400 hybrid costs the same as an S550, the S400 may get perks that you can't get with any gas-only car, no matter how much it costs. And the rich don't want to be seen in a mere plebe car like a Ford Fusion Hybrid. Thus, the plug-in luxury cars. » 10/30/14 4:58pm Yesterday 4:58pm