2013 Ebony SXL Turbo: Original Everything @ about 193K with Drag wheels.
As Puinsai said, must have A/C on and even at that should use mid-level and low (foot) vents, that lower flowing air gets sucked up at bottom of seats providing cooling mostly to the back area but some to seat. There has to be a slight 'separation' between the person's body and seat bottom/back for the cooler air to actually travel and be felt. It does work if used this way. Necessary? Not really. Luck all.