With a drag race, track battle and road test we decide which is better: the Mercedes-AMG GT or the porsche 911 gts. Full review: http://bit.ly/1yJYk2i
454 viewsSubscribe for more XCAR videos: http://bit.ly/U9XDKc With the Cayman GT4 Porsche have finally delivered the Cayman we always wanted. Is it better than a 911? Join the XCAR community... Like o...
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