Vented hoods, Stazi might correct me on this but per my theory on Vented hoods could create a vaccuum effect with will dissapate heat at an even faster rate. If your driving down the road at lets say 40mph with only the driver's window open, feel the rate at which the air comes in. Now open the passenger window and the rate at which the air comes in the driver's window dramitically increases, it's because opeing the passenger window creates a vacuum. I've notice this in my apartment as well, no windows open, my front door closes softly; but when I open a window it creates a vacuum where my front doors slams close. Anyways if this is true of this vented hood trust me we will all BE VERY happy.

Eric