Jason Goecke used an unofficial Tesla API and the Amazon Echo to create some code that runs in the cloud to respond to keyword triggers with Alexa.
(DIY Method To Summon Tesla With Amazon Echo video)
"Ask KITT" (because everyone wants a Knight Rider car) is the command to pull the car out of the garage, and the video demonstration shows it working effortlessly.
While Goecke's reverse engineering skills resulted in a "fun weekend project," he's really calling on Tesla to open up its developer tools to allow this type of function in a safe way. "Our friends at Tesla should work with the burgeoning developer community to open a fully supported and safe public API," says Goecke
In their 1931 classic Exiles of the Moon, Golden Age scientifiction greats Nat Schachner and Al Zagat describe a device used to summon a vehicle:
Thomas focussed the violet beam of a hand flash on a plate gleaming from the door of a low structure a hundred yards away. The barrier swung open. The 'eye' of a three-wheeled Hammond scooter caught the guiding ray, came skimming across the tarmark (sic) toward the waiting couple...
(Read more about the Teleradio Control (Hand Flash))