Thanks for all the compliments. As of 2013 several car manufacturers are starting to offer this option. Chrystler/Jeep, Toyota, and Audi are a few. I'm sure it's only a matter of time before more will. As far as I know all of the manufacturers have some sort of foreign object detection systems. They either use IR sensors or cubby with doors. Since the wireless charging uses magnetic resonance to charge, if coins or other small metal objects accidentally sit between the charging coil and the receiving coil for long periods it could heat the metal. I'm not really worried about this. The odds of this happening are slim. I only put my phone in this cubby, and it's only an issue while charging. Hopefully something like Ubeam takes off. It uses ultrasound to charge several devices simultaneously at up to 30 feet!
Several phones and now watches come with Qi charging out of the box. Unfortunately my Moto x did not. So as I posted on the previous page I added a $12 Qi receiver that plugs into the USB port. It's basically a really thin sticker with a wire coil inside. It sits between my case and the back of my phone and then plugs in the USB connector.
As far as charging rate vs USB. The max you'll get is 1 amp from the wireless charging. I was previously using a wired USB charger that output 2.4 amps and it could keep up with consumption plus easily charge the phone. I'm the type that demands a lot from my phone while in the car. I usually stream Google music at the highest quality (connected via Bluetooth), while Waze is always navigating with the screen on. With the wireless charging it will keep up with my usage, but can't put anything additional into the battety . For example, if I get in my car with 90% and drive for an hour then get out I'll still have 90%.
My wife usually only streams podcast/audible or talks on the phone while the screens off and she can wirelessly charge quickly.
I've been an Audio/Video Tech for 14 years. I install automation (mostly Crestron) in commercial applications (anything from board rooms to fire stations, and residential (full home control with touchpanels)