Fully functioning build! The heading and speedometer use GPS location only (all other Location Services data turned off) for their calculations (thank you, StackOverflow!) otherwise it can return very inaccurate results. I have to say that when I took the iPad out into our other car in the middle of winter in my pyjamas at 2AM to test it by driving around the block, I yelled and hooted and probably woke some neighbours when it worked the very first time. Usually my code takes a few stabs in the dark before working. I'm not 100% happy with the look of the speedometer, so I'll probably tweak that a bit to look more like the original DMC speedo. Not super happy with the round media buttons either.