I have been driving for economy for the last year, not to save petrol but just as a game, to see how good mpg I can get. I accelerate briskly and make excellent progress but still achieve excellent mpg. I have always driven with minimum use of the brakes. Always found it a smooth, safe way to drive. I love driving, and get great enjoyment from it. I tend to drive at no more than 55 - 60 mph, but take corners at speed that many motorists would never dream of.
I have had performance driving training, done a little rally driving, ridden bikes and as I have posted before, even had a go in single seaters. I have driven buses and lorries over the years. I just love driving.
If I wanted to save money I would use my free bus pass, but I neither need to or want to.