Hmmm, the fastest I've gone is around 140mph on the freeway, I can't imagine going any faster. You reach a point in the sports car where it feels very surreal, like your floating in a dream. My Trans Am doesn't sit very low, so that's why it felt like I was hydroplaning. Just recently, Texan autmotive God Hennessey took their 2015 HPE700 Mustang for a spin, taking it all the way up to 195 MPH at the proving grounds in Uvalde. After seeing this video, I have to say the HPE700 Mustang is worth every penny, coming in at $65,874. It's one sweet little package, but I don't need it, I'd kill myself!