Five Of These In Series?

I threw out my electro-chemistry and capacitor construction books a long time ago, but it seems a mystery to me how ... in this day-N-age of Lithium and maybe Ruthenium batteries and nano-bots and Higgs boson particles ... that the powers that be who haven't thrown away their books can't come up with a process to pack enough farads into a small enough space and at high enough DC voltage such that electro-chemistry batteries are no longer needed at all in a bunch of applications.

I'm not talking about farad boxes to merely "start vehicles" like the hobbyists mess with on YouTube. I'm talking about farad boxes as the only type of electrical energy storage in the vehicle.