[londons_explore]

It used to be an interview question I'd ask of electrical and electronic engineers:

> You work for an EV company who has just invented a car which can charge as fast as a regular car fills with gasoline (2 liters per second). Your job is to design the cable. Where are you going to start?

A good candidate will quickly realise the task is near impossible. One has to either accept cable which is unreasonably heavy, take huge energy losses, or have a 100kilovolt 10's of megawatts scale buck convertor ($1M of electronics) in every vehicle.

[sschueller]

Why do you need a cable? We are thinking in the realm of pumping fuel. Instead you could use a rail under the car or many other methods.

[londons_explore]

How many amps, how many volts, what will the rail be made from, how big will the pickup 'shoes' be?

[sschueller]

You can also "cheat" a bit by splitting the battery like some cellphones do now. Instead of charging one giant battery you are charging two smaller ones at the same time.

[outer_web]

You're all hired.

[mixmastamyk]

What is the top reasonable voltage? Believe chargers are up to 800 now.