Looks fake to me. It looks kinda like the device plugged into the bottom is really just under the iPhone and sticking out some. The lower half of the phone looks slightly raised compared to the upper half to me.
Maybe I'm just nuts.
just playing a little devils advocate... maybe its a sled or cradle like design where then phone just connects to a small little platform and the gps antenna goes up the back of the phone? Although i do admit that it does look like the thing is under the iphone