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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 bringing electric Pajun concept to Frankfurt?

France's L'Automobile magazine reports that a precursor to the long-rumored and much-discussed Porsche Pajun will come to the Frankfurt Motor Show. The reveal is being characterized as a "'connected' study that could well turn into a series model." Just seeing something at all, however, would be a major step. Pajun palaver has been splattered all over the Internet for more than three years, since back when it was going to come with a V6 to be an ICE challenger to the Audi A6, BMW 5 Series, and Mercedes E-Class. The intervening years have turned the rumormill up to Level: Sasquatch, and still we had no idea when we'd ever see a car that, at one time, was headed for showrooms next year. Then we got a bunch of reports at the end of last year about a swoopy electric sedan, accompanied by patent filings for novel electric and hydrogen fuel cell powerplants. This year, Porsche has been making noise in the US and Europe about EV and connected-car initiatives, and reports blossomed with giggly details concerning the Pajun, like a 300-mile range, potentially 600 horsepower, two electric motors, four-wheel steering, and a topological battery layout with "108 separate battery pouches." A more recent report posits a Tesla Model S-fighting 420 horsepower and a 265-mile range. So we hope L'Automobile is correct, because we can't wait to see the proper, sheetmetal inspiration for whatever the Pajun will be. Related Video:

Watch Jeff Zwart drive his Porsche GT3 Cup Turbo at Pikes Peak in 4K

There are always fantastic videos documenting the Pikes Peak International Hillclimb, but 2015 is giving us an embarrassment of riches. After seeing clips from some of the record-breaking runs this year, possibly the very best is here somewhat belatedly after the rally. Watching master Porsche pilot Jeff Zwart wind his fire-breathing 911 GT3 Cup Turbo up the mountain was definitely worth the wait. Already no stranger to success at Pikes Peak, this year Zwart won the Time Attack 1 Class with a run of 9:46.243. To make the feat more exciting, his Porsche was outfitted with cameras to perfectly capture his entire race up the course. The external shots truly convey a sense of speed and show how the mountain goes from tree-lined at the bottom to rocky with patches of snow at the top. The film's sublime production shouldn't be too big of a surprise, though, because Will Roegge was director, editor, and among the camera operators for the video. In 2014, he put together a great, short documentary about Zwart's preparation for the mountain and the run, as well. This year was yet another success. At a breezy 4.5 minutes, this clip is definitely a must-see, and the entire thing looks and sounds fantastic no matter how your experience it. However, if you have the capability, the video is also available in 4K. Switching over to the high resolution really makes it possible to pick out all of the gorgeous details. Related Video: