Once you have pushed this mini car charger into the socket you will struggle to ever remove it. There's nothing to grip hold of without damaging the charger or your car's charging socket by using pliers or some sort of tool. In addition it looks squat and ugly.
You will wish that you had not wasted your money. Avoid this product at all costs!!
I brought this pair if chargers thinking I could save money on buying two separate ones, big mistake!
Mains charger is ok and ample enough for the iPad, although the Griffin version of the dock plug is quite bulky and doesn't fit through the base of my iPhone case. But I have loads of Apple leads that do, so no real problem.
But the miniature car charger is next to impossible to remove from the car's accessory socket once inserted. There is nothing to grip or hold on to in order to pull it back out. I had to use a screwdriver in the end to lever it out, and damaged the casing. So I doubt very much I'll get a refund.