Red Bull's hidden air exhaust

Once upon a time, Red Bull racing hired Adrian Newey as their technical director. The Briton was immediately assigned on the to-be-developed RB3 which would solve all cooling issues that were experienced with the 2006 contender. Initially the car sported chimneys to provide enough air exit for the radiators, but only a couple of races into the season those were replaced by winglets and a small cooling exit at the base of the winglet strut. The system as used and displayed exits air along the regular airflow and therefore will generate considerably less drag than a chimney. Revolutionary you say... well Ferrari actually had something similar in 2006.