An experiment to control PR
So it's an app written for a watch that they didn't actually have or test it on, in order to carry out various functions on a car that they didn't have or test it on. And said watch would not actually have done anything other than connect to a phone even in the hypothetical situation where both the watch and car actually existed. I would call this the most pointless "experiment" ever devised, but it got their name in the news associated with two popular companies, so I guess it accomplished everything it was supposed to.