Two people can use one charger at the same time
If cars could use one last feature, it was definitely solved when they added the ability to plug in a portable charger. Having a USB charger in the car makes one never stressed about their phone battery dying. However, when two people run out of battery, one charger is not enough. Or is it?
This person opened up the charger and found an extra USB port inside. Now he can use one port and someone else can use the second; the only question is how will three people manage to share the charger?