Weekly Challenge #7: What's That Sound!? (CL Prior Design, CL 500, CLS 55 or Brabus E63?)

Weekly Challenge #7! Do you know what this week's sound is? Click on the following link to fill in your answer and participate in this week's what's that sound challenge: http://www.jwtsupercars.com/#!what-s-... Visit us at http://www.JWTSupercars.com SUBSCRIBE FOR MORE CAR VIDEOS:    / @jwtsupercars   Become a fan on Facebook now! Get exclusive previews and the latest news related to our channel! 'Like' our Facebook page!   / 292216687459082   TWITTER: https://twitter.com/#!/JWTCarChannel INSTAGRAM;   / jewethe   FLICKR PAGE: http://www.flickr.com/photos/10017578... Please let us know what you think of the video and click that 'thumbs up' button! (: Thanks for watching! Cheers, Jeroen and Wietse