the idea came when changing new bumper .. noticed that be4 tis using promote bumper my engine will cooling quicker compare current bumper (special edition). Maybe the design itself...
It's not about Airtrek but more in general. My Airtrek comes with clear windows (local USF car), but I've tinted the rear doors, rear side panel and rear windscreen 75% tint. Using it for 4 years now, no problems...