Disregard the misleading title: this is not a tiny USB device that somehow charges your car.   No, this little device plugs into the cigarette lighter port (which, ironically, hasn’t been manufactured in vehicles as an actual cigarette lighter in ages), and presents a female USB port into which you can plug your devices.  This is better than what’s currently occupying that port in your car, which is the residue from a spilled coke and crumbs from a Starbucks muffin.