It thought that sounded interesting, since there are conversions and other projects which use front suspension and brake hardware at the rear of the car and thus have no parking brake... but in fact this is a controller for the normal Tesla OEM parking brake, which uses a separate electric parking caliper from Brembo:DIY aftermarket electronic parking brake.
Pantera Electric Parking Brake Controllers
A good thing to know about if using OEM electric parking brakes outside of the complete original vehicle. On the other hand, a momentary push button with a colour-changing indication seems like a lousy interface. OEM installations usually use a pull-up/push-down switch, so it can be used without looking for an illumination colour.
I think that it should also be interlocked with the drive system, to avoid trying to drive away with the parking brakes locked, or engaging drive without either the service brake or parking brakes applied. This is particularly important with the Tesla Model S/X drive units, as they do not have a parking lock internal to the transaxle, so they are much more dependent on the parking brake than a vehicle with a transmission lock.