Sure they have. Volvo, Mercedes and others use it on trucks too. Thing is, the article doesn’t mention GPS anywhere. This is a predictive system based on analysing the road ahead and eventually using vehicle to infrastructure communication.
So many fun words to read about both this truck and the type of person that would buy it. Allow me to present that type of person (if only the wheels were black too).
For whatever it’s worth, it’s claimed to save you over 5k per annum in fuel.