It maybe possible to someday charge cheaper low-end electric cars with a USB cable plugged into a USB charger which is plugged into a regular home wall power outlet. It may take many more hours to days to fully charge an electric car by using a USB charger because of not being powerful enough. But, it could be better than waiting days to weeks for a new car charger to be delivered to your home, not having enough power to drive home, and having no charger to use, or hiring a tow truck to tow your car to a charging station where you may spend a lot of money on hiring a tow tuck. A lot of people also carry around USB external battery pack chargers with a built-in charging battery which maybe useful at charging the car a little bit more, so it can drive an extra few feet or miles to the driver's destination. A few more powerful laptops like the Apple Macbook Pro, and Google Pixelbook which uses an Intel i5 or i7 CPU uses a USB-C port for charging, and a more powerful USB charger for charging the laptop, so less powerful 1 to 2 passenger electric cars maybe able to be charge by a USB-C cable.