dash wrote: Rather I expect vehicles to shift from oil/gasoline to electric using dense capacitors.

I sometimes wonder about that. Without a practical superconducting cable, this may take a while due to oil being delivered to a vehicle at several MW and electricity being deliverable at only a few hundred kW. I can fill up for a 400 mile journey in 1 minute with next to no personal risk or charge up for a 130 mile journey in 10 minutes with a high risk of electrocution.