Pros:
-Two outlets to use
-Works with any standard US plug
-Don't need additional/special cords to plug into car

Cons:
-The internal fan is a little loud... but not loud enough that you can hear it on the other end of cell phone conversations.

Some uses:
-Charge an electric razor to freshen up between calls/meetings
-Charge laptop between sales calls/meetings
-Charge cell phone & BlueTooth headset at the same time

Must have:
-If you live in your car
-If you are a salesman
-If you have more than a couple of electronic devices and don't want to buy/carry additional cords for them in your car 4 stars