Few are the men wealthy enough and crazy enough to allow Hennessey Performance Engineering to work their tuning magic on already-costly cars.

After all, not just anyone can afford a $45,000 Dodge Challenger SRT8 on top of the tens of thousands of dollars Hennessey adds in handling prowess and horsepower.

It must be a very special moment for owners getting behind the wheel of their transformed muscle machines for the first time, and Hennessey has shared a video of his initial reactions. Suffice to say, the new owner was all smiles.

From awe to excitement in a single frame.

The HPE 800 package adds a pair of ball-bearing turbochargers to the 6.4 liter HEMI V8, as well as beefing up the forged internals, porting the factory cylinder heads, and upgrading the fuel system.

The result is a rip-roaring 800 horsepower of Mopar madness, and as you can see from the very first pull, the new owner falls in with his twin-turbo Challenger.

“That’s not the same car at all,” is the first thing he says after the first pull, and later on he remarks that the ride is “a little scary.” Yeah, we can only begin to imagine the feeling of joy and jubilation that must come with picking up a car of this caliber, and getting to enjoy it on a daily basis. The new owner’s “Life is Good” shirt says it all.