A few additional notes on the bumper.
1. While it adds protection by elevating it when laying flat, you can also lean it against something and know that the bumper is making contact not the glass, in addition to which it keeps the phone from sliding to a flat position.
2. No Apple dock is designed for use with any case. Even my very old universal dock that does not have inserts, just a larger opening, won't work because the thickness of the bumper prohibits the iPhone from completely seating onto the connector. You have 2 choices:
a. Get a universal and remove the insert so it can seat down with a case on.
b. Get a dock extender.
http://www.sendstation.com/us/products/dockextender/ Comes black or white. But pricey. Otherwise I'd get 4 or 5.
3. I too have a car charger that did not fit but having had multiple iPhones and iPods, I simply plugged a white iPhone cable into the usb plug in the car charger and the dock end into the iPhone. That said the other issue you may run into is that with the bumper on many headphone jacks won't work. I have an aux input in my car that I plug into my iPhone, but with the bumper on, I cannot plug the fatter plug through the bumper hole. Luckily I had a recessed headphone adapter from the original iPhone days that I used to solve this problem.
If you run into this you can get either the Griffin Smartshare with adapter, which gives you a nice splitter and flexible adapter that I added on to my aux cable in the car for plugging into the the iPhone through the bumper.
http://www.griffintechnology.com/products/ssadapter
I don't believe they sell the adapter separately.
Or you can get one by Belkin. It is straight but quite small. There appear to be two different Belkin designs.
http://www.amazon.com/Belkin-Headphone-Adapter-iPhone-mini-phone/dp/B000V8V3JS
and
http://www.geeks.com/details.asp?In...&utm_medium=ShoppingSites&utm_campaign=F8Z270
EDIT: Apparently the Sendstation extender does not work unless you file it down, however they are supposedly working on a redesign. Meanwhile a potentially cheaper alternative is the Slim iExtend at valueoutfitters.com