Porsche will be introduction a lot of new technologies that have yet to be placed in a production EV. Their in house 800 volt system will yield some incredible specs in terms of its ability to rapid charge. According to the company when hooked up to one of their supercharging systems for less than 20 minutes you can add approximately 250 miles of range. For smaller bursts that translates to roughly 62 miles in a mere 4 minutes. https://www.carscoops.com/2018/11/four-minute-charge-will-give-porsche-taycan-100-km-range/