I got one of these and put my N5 wireless charger on top of it, and the phone on top of that. I had to tilt it back just a bit so it wouldn't slide off, but it's been working great, and doesn't require any modification to the car.

Can't go wrong with this mount http://www.amazon.com/Mountek-nGroove-Magnetic-Vehicle-Devices/dp/B00E9L0HGI/ref=sr_1_3?ie=UTF8&qid=1389112384&sr=8-3&keywords=mountek

Goes in your CD player and it doesn't have an ugly clamp.

Looks good something I considered but I ended up going with this.

http://www.amazon.com/gp/aw/d/B00E9L0HGI/ref=mp_s_a_1_2?qid=1387890236&sr=8-2&pi=SY200_QL40

It locks into the CD slot and is magnetic as well. Holds great to N5, and I just use my normal charger if need.