No matter how good a car or truck comes from the factory, there's always more to be had — and John Hennessey is determined to get every last ounce of performance he can, no matter how exotic the car. Hennessey Performance's latest project is the McLaren 600LT, a car that hits 0-60 in 2.9 seconds and a top speed of 204 MPH out of the box. Proving that too much is never enough, Hennessey takes the 600LT into the performance stratosphere, increasing horsepower to 1001. Acceleration figures decrease accordingly, with 0-60 coming in 2.1 seconds and the 1/4 mile in 9.6 seconds at 156 MPH. The HPE1000 includes a new twin-turbo system, wastegates, intercooler, and stainless exhaust, along with carbon fiber exterior trim and Hennessey emblems. When John Hennessey took delivery of the first 600LT in the US, he said it couldn't be improved — and you can see how long that opinion lasted.