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Barrett-Jackson rundown: 2024 GMC Hummer EV, Colin Powell's Corvette and more

The echoes of the last hammer fall at Barrett-Jackson's Scottsdale Auction have disappeared into the Arizona night, as have the record crowds and the traffic jams. During the Super Saturday charity auctions, three main attractions drove onto the dais for bidding: Late U.S. Chairman of the Joint Chiefs of Staff and Secretary of State General Colin Powell’s 2015 Chevrolet Corvette Stingray, the hammer price benefitting AmericaÂ’s Promise Alliance, the nonprofit Powell founded to support kids; The first production 2024 GMC Hummer EV SUV Edition 1 with VIN 001, proceeds going to Tread Lightly!, which educates people on how to enjoy the outdoors in a motorized vehicle and simultaneously protect the outdoors; And the first production 2024 Ford Mustang GT Fastback VIN 001, its hammer price benefiting the Juvenile Diabetes Research Foundation. Before the Saturday showcase, charity auctions on Friday took Barrett-Jackson past a huge milestone. When an 800-horsepower 2021 Shelby Super Snake Count's Kustoms Edition hammered for $350,000 to support the veteran's charity Camp Freedom, the auction house officially surpassed the $150 million mark for charity auction proceeds. Piling on before the clock struck midnight, a 2023 Ford F-150 Lightning 4x4 Super Crew sold for $275,000, those funds donated to Fighter Country Foundation. Then came Saturday. Powell's Gunmetal Gray on black Stingray was said to be a daily driver, but with just 15,600 miles on the odometer, Powell — who died in 2021 — apparently had a very short commute. Equipped with an eight-speed automatic transmission and chrome wheels, it sold for $200,000. The first production 2024 GMC Hummer EV SUV Edition 1 ran the bidding up to $500,000. That's quite a ways down on the $2,500,000 that the bedded 2022 GMC Hummer EV Edition 1 garnered at the charity auction in 2021, and not a bad price all things considered. The owner gets the first one off the line instead of getting lost in the 90,000-order backlog, and the markup goes to a good cause instead of a flipper and eBay fees. The first production 2024 Mustang GT Fastback brought in both less and more than the Hummer EV. The Ford's hammer price came to $490,000. However, two additional philanthropic donations for this lot in the amounts of $50,000 and $25,000 took the final price to $565,000. The big movers on the day were outside the charity sphere, four cars breaking the million-dollar mark.

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"

Top horsepower-per-dollar cars in 2017

Bang for the buck. That quasi-scientific statistic is bandied about by motor heads everywhere from classrooms to barrooms, though the truth of the matter is that it's exceedingly complex to measure. A fair performance-per-dollar index would include something like cross-referencing MSRP (Manufacturers Suggested Retail Price) with point-to-point times on a track or driving route, which is obviously hard to do comprehensively. But, for the sheer joy of talking about cars and playing with a big spreadsheet, there's always the horsepower-per-dollar index, which is more straightforward, albeit hilariously flawed. There are vagaries even with this simple formula, of course: MSRP for vehicles can change at a moment's notice, to say nothing of the bottom-line shifting that happens with local deals or showroom negotiation. For this list we're running with the straight MSRP wherever possible, and as recently reported as we can get it. All the vehicles on this list are 2017 models, and all trims are reported where the lowest price and differing power levels intersect. Some choices were made for personal preference and some for sanity, avoiding things like all 48 trim levels of the Ford Transit, all with the same horsepower). If this list were a simple top ten, or even a top fifty, you'd be bored to tears with all the red, white and blue that is represented. Following perfectly with conventional wisdom, American cars really do lead the world where hp/$ is concerned. So, for the sake of variety (and the sheer joy of seeing a minivan 'win' one round of this thing) I've sorted out some top five and bottom five lists for broad power categories. Let's dive in. Less Than 100 Horsepower Okay, okay, this is hardly a category we'll grant you. But we've often tried to click off all the sub-100-hp cars on sale in the US, and making this list gave us an excuse. It also illustrates that none of these smallish vehicles bring cheap horsepower to the table - for that you'll need a motorcycle. The segment-leading Chevy Spark (above) asks just over $139 for each hp, and that Smart Fortwo Electric Drive has hp on sale for about the same price as its very distant family cousin, the Mercedes-Benz SL65 AMG (insert your favorite Smart joke here... we know you want to).