Not too surprising, it's just the standard USB-A outlet charger for 5 V output or whatever. So if you already have a car charger that has the USB outlet for charging, you can use that with the P168 usb cable to charge from your car.
I just like the P168 charger in that it can charge the spare battery. So I leave the spare "trickle-charging" and just switch between the two and my phone never has any downtime.