wah.... complicated theories of physics calculations :Dminivan said:my theory is... when the air cond is off, you roll down the windows. This creates turbulance, which means theres drag....
i read in a mag you save 25-30% fuel with your windows up. So to save fuel, drive with air cond off and windows up... :p try doing this mid-day.. :p :D

dear poji...poji_EG9 said:i think not so weird....same as me lar...
bcoz with aircond ON we usually drive slow....so fuel can save a lot....
but when we racing/merempit/vtec usually we OFF da aircond....so how to save?
driving attitude actually...heavy leg larrr heh2.....