I'm primarily a highway driver with an automatic, so here's my list (no particular weighted order of importance):
- Sufficient Practice from Instrumentation (know your vehicle)
- Scan the road ahead for adjustments (similar to situational awareness)
- Proper Tune (including underhood mods) and tire inflation -- (includes the engine block heater as an efficient "head start")
- Aero: Read the wind and adjust speed accordingly / avoid speeds over 60-65 unless coasting downhill / make aero tweaks if able
- Avoid idling
RH77