Here is the same principle but using a smartphone for geo-location instead of a car. They claim up to 26% energy savings annually: http://www.tado.com/de-en/#yo

Here is the same principle but using a smartphone for geo-location instead of a car. They claim up to 26% energy savings annually: http://www.tado.com/de-en/#your-day-with-tado http://www.tado.com/de-en/#your-day-with-tado