2002 Rolls Royce Silver Seraph Base Sedan 4-door 5.4l on 2040-cars

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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).

Question of the Day: What's the greatest British car ever?

The British automotive industry has produced everything from high-production econo-commuters to staggeringly luxurious oligarch-wagons, along the way winning plenty of races and building plenty of beautiful machines. The original Mini led directly to the past half-century of transverse-engine, front-wheel-drive cars built everywhere, the MGB put the sporty little convertible into everyone's reach, and the Morris Oxford became the most beloved motor vehicle in India. So many to choose from, but we want you to pick one. What will it be? Related Video:

Aeroboat packs 1,100 seahorses of Rolls-Royce Merlin V12 power

We don't typically cover boats here - this is, after all, Autoblog and not Aquablog - but every so often something comes along that makes us want to dip our toes in the water, whether it's a Jaguar-designed speedboat, a Gulf-liveried megayacht or a Lamborghini-powered Riva Aquarama. This is another one of those occasions.
Set to be unveiled at the Salute to Style show in July at The Hurlingham Club in London, the Aeroboat is a motor yacht that seems to blend retro and furutistic lines in equal measure that would make Jules Verne proud without going Steampunk. Inspired by the Spitfire fighter plane, the Aeroboat packs aircraft-inspired switchgear and shock-mounted seats into a long, sleek form. But what really has our interests piqued is what lies beneath the stylish decks.
Each of the dozen Aeroboats to be built will pack a reconditioned, marinized, fuel-injected Rolls-Royce Merlin V12 engine - the same 27-liter powerplant that propelled the Spitfire. With 1,100 horsepower on tap, it's expected to propel the Aeroboat up to a top speed between 75 and 95 knots, or 86-109 miles per hour by landlubber standards, which is pretty damn fast on the open water.