We've already shown you the renderings of the Hennessey HPE550 Escalade, providing a sneak peek at what might be coming for Cadillac's SUV flagship. Well, we now have the beginnings of it in this YouTube video from Hennessey. John Hennessey and his wife have just taken delivery of their 2015 Cadillac Escalade from Sewell Cadillac in Dallas and driven it down to Lonestar Motorsports Park west of Houston, where Hennessey conveniently enough has an on-site workshop. John lets his wife take it down the quarter-mile for kicks. The two then trade places—and John makes a considerably more aggressive launch.

Despite weighing nearly 6,000 pounds, the Escalade managed to run a 14.88 quarter-mile at 93.3 mph. Expect those figures to be improved upon with the addition of a supercharger and other performance-enhancing features sure to come when the big brute undergoes the HPE550 transformation. As with most of Hennessey's creations, don't expect that performance to come cheap. Before any modifications, a well-equipped Escalade is around $90,000, and the addition of Hennessey goodies typically adds between $20,000 and $30,000, with the only real limit being the buyer's imagination and bank account. Stay tuned in the months ahead for a more in-depth look at the making of the HPE550 and its performance.

Source: Hennessey Performance Engineering