I praise their innovation and ingenuity but it's not for me. Not understanding why some are so in a hurry to void their warranty. Especially with a system that is 80% redundant with what's already in the car. Not to mention that this is a separate Bluetooth device that can be hacked-into that won't have the level of encryption Tesla has.
So, this is just a geek in me talking. I get that this is just a "display" that supposedly regurgitate data from the main screen for the driver, but it DOES have to be tapped-in to the main display which is connected to the various control modules in the car. One wrong signal from this device could prove to be disastrous. They'd have to be officially certified by the FCC that this is a READ-ONLY product before I will consider putting it my car.
What would cause this to void your warranty? It looks like it's just a wiring harness that grabs that piggybacks the signal stream. No potential to modify any of the cars systems or electronics.