[Christ]

I just don't accelerate on hills, as much as possible. I prefer to accelerate using the throttle on flats, or just using the weight of the car as much as possible on downhills.

Aside from that, I turn the engine off when it's not needed (to hold speed or accelerate), and almost never use the brakes, even in an auto. I make every attempt to determine whether or not I'll need to slow down more quickly than I can coast, and if I will, I leave the engine running so I can compression brake. Brake dust is harmful just as much as exhaust fumes, so it's a trade off.