I have the DLO HybridShell for iPhone 3G, 3G S case for my iPhone. All the car mounts I found for the iPhone were custom fit for a iPhone without a case, so I had to build a custom holder, and this is what I came up with. I have used this for a month or so driving tractor and my iPhone never once jumped out of it. It is open on the bottom so the charger can be plugged in. I just mounted it with double sided tape, and it worked fine.I cut out the parts with a water jet. I had to use two centerpieces because I did not have thick enough aluminum. If using thinner stock just stack up as many as needed. I then just used 4 machine screws to hold everything together.This is the case this thing was built for: http://www.amazon.com/DLO-HybridShell-iPhone-3G-Black/dp/B001DC9UCI/ref=sr_1_15?ie=UTF8&s=wireless&qid=1274234177&sr=8-15If you make it I would love to see a picture.