I pretty much predict the traffic, and I pick the 'easiest' route (not necessarily the shortest but most of the time it is). I pretty much know the timing of the traffic lights as well so I can turn off the engine at a traffic stop.
I rarely turn on the AC when it's not hot outside, and I turn it on only when I had reached constant speed (if I need it). In some cases I only turn the AC on at brief stops, and turn it off when I'm taking off (leaving the blower fan on). I also use lots of engine braking and I corner pretty fast as well. Oh and I seldom take passengers so that helps.
And the golden rule, treat the accelerator pedal like it's made of tofu.
It annoys the person behind me, but hey, if they're in a hurry, use the overtaking lane, if not they can pay for my fuel so I can go faster. I feel like there's a sweet spot between accelerating too slow and wasting time and fuel, and accelerating too fast and burn excess fuel.
It's not really impossible, it's just hard work.
BTW I haven't been hyper-miling in a while. Really tiring work, and I'm starting to venture out of my territory more often. The car's 7 years old if anyone's wondering, and yes it is a 1.0 manual. I can't imagine what I can do with a 1.3 manual.
I bet I can do pretty well in fuel saving competitions.
no air cond use while driving ??? drive slow and FAST CORNERING ?? engine breaking good for FC meh isn't it will rev up the engine ??