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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).

Watch Jay Leno drive an ex-highway patrol '61 Dodge Polara

The latest vehicle to swing by Jay Leno's Garage is a 1961 Dodge Polara. This one was used by the California Highway Patrol half a century ago, ordered specially by the state police instead of the Darts that were usually used by law-enforcement. After sitting out in the sun for a few decades, it recently underwent a comprehensive, ground-up restoration by the historians and craftsmen at the Automobile Club of Southern California. As you can see for yourself, the result of the restoration is really quite stunning. The ACSC apparently spared no expense, bringing the 413-cubic-inch V8 back up to working order, along with the emergency lighting, radio, certified speedometer... the works. In the process they even found the engine cranked out more than the factory quote of 325 horsepower, recording 332 hp and 406 pound-feet of torque on the dyno. The Polara CHP cruiser hadn't even been back out on the freeway since the restoration was finished. But after getting the full run-down from the guys responsible for its resuscitation, Jay wasted little time in bringing it back to its natural habitat.

Dodge Viper recall requires small-handed mechanics

It has been over a year since Chrysler first announced its recall of 3,660 2003-2004 Dodge Vipers because the airbag could suddenly deploy. The repairs are finally beginning, and it appears to be a nightmare for mechanics.
According to the automaker's filing with the National Highway Traffic Safety Administration, the airbag control module can fail, which causes the bag or the seatbelt pre-tensioner to deploy without warning. It took over a year to design the new parts, according to The New York Times. However, Chrysler finally has a new "jumper harness with an in-line diode filter circuit" ready to fix the problem.
The dilemma now moves to the mechanics who have to actually install the part. A 47-step guide from Chrysler explains that the procedure should take about two hours. It's not an easy job, though. Most of the dashboard has to be taken apart, and the instructions include this helpful bit of advice: "Installing the jumper harness and filter box into position is not an easy task. Patience, perseverance, and small hands are required." We wish the best of luck to them. The fix comes just in time for the Vipers to enjoy the summer sun.