Performance: 2004 Hennessey 650R Ram SRT-10

Big power underhood is great for bragging rights, but what does the Hennessey 650R Ram do at a stoplight? Frankly, it shreds tires. Despite careful clutchwork, the 650R flat spanks the rear tires with too much throttle on launch. Yet once rolling, the 650R charges harder than anything we've seen. In addition, for those who know how impressive these numbers are, the Hennessey 650R runs 0-100-0 mph in 14.6 seconds...and it's a truck.

And if a truck that runs 12.50s just isn't enough, consider Hennessey's radical Venom 800R package. The 650R engine is the basis, but added to the mix are a pair of ball-bearing turbochargers, huffing through a suitcase-size front-mounted intercooler. The tuneup is worth a reported 840 pound-feet of torque at the rear tires, which could equate to a fistful of speeding tickets if you're not careful.

You can even take a drive down the quarter-mile in the Hennessey-modified Ram for a world-record-setting run in this Hennessey Performance Dodge Ram Video.