i got into battery tech early. and i know how easy it is to build them.
i run two self built packs as our primary power storage.
putting one in a light weight vehicle shell is not overly difficult. and with LiFePo4, not overly dangerous.
the problems are with corporate and government bureaucracy.
in every area of my life, where i have been experimenting with new technology to simplify and liberate, the ONE primary problem is ALWAYS greed and desire for power, operating through old political systems.