You have to make it learn in first 30minutes of driving. Toyota drivers will do it for you, or they'll let you know. In my case I accelerated differently upto 80km/h and stopped. Did that five times and drove pretty neatly and just on 3-4 bars of eco indicator all the way to home. Yes it is intelligent, when you accelerate it hard upto 100 and bring accelerator pedal to normal speed it keeps rpm a little higher and let it drop after sometime; Moreover, engine braking changes according to the speed and braking you do.