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What's driving the spike in air-cooled Porsche 911 prices

Classic car prices have been racing skyward in general, but prices for air-cooled (pre-1999) Porsche 911s are ascending like they're strapped to rocket boosters. It's been going on for years, and every year people are surprised by how outrageous it's getting: Classic Driver covered it this month, as did The Truth About Cars who included this example of a "scruffy" 1993 RS America with 215,000 miles asking $80K; Mike Spinelli at Drive riffed on it at length last year along with a host of classic-car-market observers; Porsche forums were at it two years ago; and let's not even get into the 993 Turbo, going for prices so high you have to lie down to look at them. Speed Academy has run a piece looking at why it's happening, one theory being that regular-guy owners are hopping on the runaway-price wagon without any good reason. As in the example of that high-mileage, scruffy 911 RS America at Bring a Trailer, the owner sees pristine examples valued by Hagerty at $170,000, and even though the average value is $93,238 he thinks something like, "Mine's got to be worth half of top dollar ..." The tide - even one rising on air - makes it hard to find decent prices. Then there is the flood of money into the market. In spite of articles that try to temper investors' outlooks on collectible cars, other articles in places like the Financial Times and the Guardian promote vintage metal as a safe place to put money and reap astonishing returns. Speed Academy thinks one side effect of high 911 prices is that responsible enthusiasts are turning their attention to cars like the BMW 2002, E30 M3, and E9 3.0CS, saying their prices are "sharply on the rise." The entire article is worth a read since it goes into markets far afield from pricey German steel, but incredibly, the entire piece was actually inspired by a 1997 Acura Integra R that sold for $43,000 on eBay. So while this could be the best time to get into the classic car market if you know what you're doing, it is certainly the best time to do your homework. Related Video:

Vitruvian Energy crowdfunding to make EEB, a trashy biofuel

When sewage is treated at a wastewater treatment facility, biosolids are the byproduct. After being separated from the water, biosolids are usually sent to a landfill or incinerated. That doesn't mean that they're without value, however. Vitruvian Energy has created a process to make a usable fuel out of this human waste product, and while the source is pretty gross, it is undeniably abundant, and the results are much cleaner. EEB can be made for less than $4 a gallon. In a process that Vitruvian Energy claims is energy efficient, biosolids are femented and introduced to a type of bacteria to create PHA plastic. Reacting the PHA with ethanol creates the ethyl-3-ethoxybutyrate (EEB) biofuel. Vitruvian says EEB can be blended up to 20 percent with gasoline or diesel without any engine modifications. This lowers the carbon footprint of the fuel it's blended into, and serves to oxygenate diesel, leading to fewer harmful emissions. EEB can also be made using other organic waste products, such as corn stover, rice straw and distillers grains. EEB can be made for less than $4 a gallon and isn't subject to the maddening market fluctuations and international politics of fossil fuels. Furthermore, EEB's carbon footprint is 70 percent less than that of fossil fuels. Vitruvian also sees potential for EEB to be used on its own to power vehicles or burned to produce electricity for the grid. So far, Vitruvian Energy has used grants from the California Energy Commission and National Science Foundation to develop EEB, and has tested the fuel in a Pontiac Solstice at Oak Ridge National Laboratory. Now, Vitruvian is wants to test EEB on a larger scale in the real world in order to prove EEB's viability to interested parties in the wastewater treatment industry. In an Indiegogo crowdfunding campaign, Vitruvian Energy hopes to raise $200,000 to build a prototype EEB production line and to run a test vehicle for a year on an EEB-diesel blend on the streets of Seattle. Donors can score some interesting perks such as shirts and bumper stickers that say "Get Clean with Poopaline." Learn more about EEB in the video and press release below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Pontiac Aztek rises from the ashes of infamy in Firebird Trans Am guise

What if the Pontiac Aztek, one of the most widely ridiculed vehicles ever built, was reimagined with a little flair from one of the former brand’s more legendary cars? Well, it turns out that someone not only came up with that idea, but followed up on it. And so, we present to you the Pontiac Aztek Firebird Trans Am, uh, trim package? ItÂ’s not real, of course, but it comes from Abimelec Arellano, an Hermosillo, Mexico-based car designer with too much time on his hands who goes by the name Abimelec Design. Arellano redesigned the midsize SUVÂ’s wimpy front fascia to surprising success by simply adding widened fender flares and perhaps modernizing the headlights. He also went all-in embracing the AztekÂ’s abrupt, flattened rear end by removing the rear bumper lip, adding a slightly more aggressive rear spoiler to boot. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Elsewhere, the dominating and cheap-looking gray plastic under-cladding is gone in favor of body-color panels. Arellano also added some probably larger Pontiac Snowflake wheels with gold accents that really make them pop and play well against the signature Firebird decal dominating the hood. Commenters generally fall into one of two buckets. As one put it, “I never thought the Aztek could look this good.” Others implored Arellano to do a version with a T-top. Or as one Autoblog editor put it, “So it turns out the reason the Aztek was a laughingstock failure is that it didnÂ’t come in a Smokey and the Bandit Edition. Somewhere, a dude who got shouted down in a product-planning meeting years ago is vindicated.” Sold between 2001 and 2005, the Aztek arguably reached the pinnacle of its notoriety as the metaphor for the drab, underachieving life of Walter White in AMCÂ’s meth drama, “Breaking Bad.” It came equipped with a 3.4-liter V6 that made 185 horsepower and sent it through a four-speed automatic to the front wheels, with an all-wheel drive version also available. The Aztek may have the last laugh, especially if it gets a screaming chicken. “The fact it was a controversial design and didnÂ’t sell well will make it an object of curiosity from a historical standpoint many years from now,” McKeel Hagerty, president and CEO of classic-car insurer Hagerty Insurance, told Autoblog back in 2016.