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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).

Porsche Cayenne shows a bit more face, plug-in spotted

Porsche was first rumored to be working on a plug-in hybrid (PHEV) version of the Cayenne over a year ago. However, we had never seen it, until now. The new model was caught almost completely undisguised while testing. In another stroke of luck, we got a glimpse of the upcoming facelift for Porsche's SUV (pictured above) as well.
According to the spy shooter, it was windy during the cars' cold weather testing. The cover blew off of the facelifted Cayenne, and there was enough time to snap these pictures before it could be hidden again. The changes are all quite minor but jive with what we saw the last time it was spied. The rear still wears some cladding but is expected to be hiding lights similar to the Macan.
The second gallery shows off the upcoming Cayenne PHEV. It looks nearly identical to the standard model, except for the extra panel on the driver's side of the car that hides the electric port. One image even shows the car plugged in. The new version is expected to use the same supercharged 3.0-liter V6 and 9.4-kilowatt-hour lithium-ion battery pack with a combined 416 horsepower and 435 pound-feet of torque from the Panamera S E-Hybrid. We enjoyed the system when we tested it last year. It's rumored to debut on the SUV sometime this year.

The 2013 Rolex 24-hour race at Daytona comes down to the last hour [spoilers, w/video]

It took 24 hours to run the race, but it was the last one was stuffed with the high action as four cars were still trying to figure out how to gain victory on the track and in the pits. Along with the obligatory crashes, spins, mechanical issues and retirements had come numerous penalties, a double-digit number of full-course yellows and two hours of fog that turned early Sunday morning into a stretch of parade laps.
The final hour would make up for the morning - drivers who might have been happy just to get on the podium had a shot at victory as the end of the race approached, and that turned into a few gambles that paid off, and at least one that didn't...