Here’s our Top Gear host Chris Evans going flat out in a Viper. The Viper in question is an ACR – which stands for American Club Racer. It’s got 645bhp and 600lb ft of torque from a monster 8.4-litre V10 engine, and will hit a top speed of 177mph. Subscribe: http://bit.ly/SubscribeToTopGear It weighs just 1,549kg. It sports many splitters, dive planes, vents and diffusers. There is a wing. There i
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