( http://www.TFLcar.com ) The brand new 2013 SRT Viper is a true 640 HP fire breathing American supercar. Welcome to TFLcar's Viper week! For the next 5 days we'll be featuring a new Viper video every day. Today we start with what is one of our favorite videos because it captures the raw essence of the new SRT Viper. What do you think happens when you combine a 640 horspepower Viper a completely soaked and drenched Sonoma Raceway. The answer is this video that features the new Viper raw and unleashed.