If I had had this car charger with 4 USB ports, this would not have been an issue.
Serious car charger for serious people.Pretty cool, eh? Seems to work for any device that can be powered through a USB port. I think this would be especially good for road trips with The Boy where we've got the GPS unit and each of our cellphones to keep charged up. And at only $22.99, it is about as expensive as a standard car charger that just works for one device at a time.
Thanks to The Boy for pointing this device out to me!