Hennessey Performance has published a video showing the powerful 2015 Cadillac Escalade fitted with HPE550 power package doing several dyno runs. It is interesting that the tuned version is only RWD (rear-wheel drive), which is very strange for such enormous vehicle.
The SUV is 5,179 mm long, 2,045 mm wide, 1,890 mm tall with a wheelbase of 2,946 mm. The curb weight is 2,541 kg (5,602 lbs). The 2015 Escalade rolls big 20” alloy wheels fitted with 275/55 R20 tires providing good comfort.
The engine is a 6.2 liter supercharged V8 boosted to 552HP (406 kW) at 5,500RPM and 763Nm (565 lb-ft) of torque at 4,200RPM. This is an increase of 126HP and 139Nm. The result is thanks to a number of upgrades including a new high-flow supercharger system; high flow intercooling system; HPE engine management calibration; all necessary gaskets, fluids and hardware; professional installation; dyno tuning and road testing; serial-numbered dash plaque; serial-numbered engine plaque; Hennessey badging; HPE550 Supercharged badging; Hennessey embroidered floormats and a 3-year or 36,000 mile limited warranty.
The 2015 Escalade is priced from $71,695 and the price for the performance package is available upon request.
httpv://www.youtube.com/watch?v=TUVlElJx7s8
Source: Hennessey
This Supercharged HPE550 black manual 2SS Camaro is one of the first to get a production chrome Magnuson supercharger system from Hennessey, along with the high-flow fuel injectors, stainless steel cat-back exhaust, HPE cold air induction system and HPE dyno tune that comes as part of the HPE550 package. 
Hennessey Performance Engineering (HPE), well known for their extreme performance sports cars and muscle cars, has begun production of its 562 hp 2010 HPE550 Camaro.