I've seen this repeated plenty of times, but it'd like to point out that supercaps have even worse energy density than lithium ion batteries so it doesn't make any sense to carry one in the car. The Al-Air theory makes more sense. although neither have any evidence so far of happening. Also 1 minute charging of the 85kWh pack requires 5.1MW of power, even 5 minutes still requires 1MW. Even supercaps are going to struggle to provide that power (the "flash charging" electric bus uses a 400kW charge via supercaps).