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BMW Z8, Lambo LM002 sell for $192,500 apiece in Detroit [w/poll]

Think a car are a bad investment? That all depends on what kind of car you're talking about. Because while most cars depreciate in value as soon as you drive them off the lot, others can do even better than hold their value. The cars that appreciate tend to be pretty high-end exotics, but they don't have to be multi-million-dollar classics to command a premium at auction. Just look at the results from RM Sotheby's Motor City sale in Detroit this past weekend. The auction house moved a solid $7.4 million worth of metal, which is pretty impressive when you consider that – unlike events at Lake Como or Pebble Beach – not one of the lots dipped into seven figures. 1930s-era American classics performed the strongest, with Duesenbergs, Packards, Auburns and the like all fetching hundreds of thousands. But what intrigued us most were the European exotics that rounded the top ten results. Amidst the Depression-era American steel were a BMW Z8 from 2001 and a 1988 Lamborghini LM002, each of which sold for an equal $192,500. Hardly the highest figures paid for European exotics this year, but considering how much they were worth just a few years ago, they've proven solid investments. BMW only made 5,703 examples of the Henrik Fisker-designed retro Z8, of which only 2,543 were brought to the United States, where they originally sold for $128,000. The most anyone had ever paid for one at auction, according to Sports Car Market, was $184,082, just this past March at Silverstone. That makes the price achieved this weekend a new record for one of the slinkiest vehicles the Bavarian automaker has ever made, representing an impressive 50-percent increase in value over the course of fourteen years. This particular example – chassis WBAEJ13481AH60437 for those keeping track – is decked out in silver over black, with less than 15,500 miles on the odometer. This Rambo Lambo was produced early in the 301-unit production run, with the sought-after carbureted engine and 32,000 miles on the clock. It didn't set any records at the same price, other examples of the LM002 having traded over the past few years for over $200k. But considering that Sant'Agata originally charged around $120-130k for the SUV when it was new, its selling price still represents about 50-percent appreciation (leaving inflation aside).

BMW ready to bring more i3, i8 plug-ins to US

BMW has found a receptive audience for its first batches of plug-in vehicles in the good 'ole USA. The German automaker, which started selling its first mass-produced i plug-ins in Europe late last year, will send a higher percentage of those vehicles to the US because of strong demand here, according to Automotive News, which talked with BMW executive Ian Robertson. And the Americans might cause Bimmer to speed up production, to boot. BMW makes the i3 electric vehicle and i8 plug-in hybrid in Germany, and has sold about 10,000 units of the former and 280 of the latter worldwide. Since August, BMW has been selling about 1,000 i3s a month in the US (it sold just 58 i8s in September). The bigger story, though, may be that Bimmer has sold out of its US allocation of i8s through the end of next year. Pretty heady stuff for a car that starts at around $137,000. Currently, BMW builds around 100 i-series vehicles a day in Germany, and may speed up production of the i8 for the aforementioned reason. As for the i3, which comes with an option of a gas-powered range extender, we'd reported earlier this year that the waitlist for that model had grown to about six months. Our i3 First Drive report is here if you'd like to know what all the fuss is about.

Mini Cooper SE Convertible wheels made entirely from recycled aluminum

Mini has revealed an interesting fact about its limited-run Mini Cooper SE Convertible: It's the first production car with wheels made from 100% recycled aluminum. Despite sharing the same look as wheels available on the regular SE hatch, they're actually much more environmentally friendly. The wheels were developed with Swiss wheel manufacturer Ronal. The company sells aftermarket wheels under the Ronal and Speedline brands, and it supplies OEMs. And it's no stranger to more environmentally-friendly wheel production. It supplies wheels for the Audi E-Tron GT that are made using a smelting process that produces oxygen rather than carbon dioxide, and it now has a line of claimed carbon-neutral aftermarket wheels. But back to the Mini's wheels. Using all recycled aluminum has the obvious benefit of not requiring new aluminum to be manufactured. But the benefits are greater than just the raw material use. Mini points out that a major improvement in carbon emissions comes from being able to skip the electrolysis process for new aluminum manufacturing. Pure aluminum is extracted from aluminum oxide (which is in turn taken from the mineral bauxite). To do this large amounts of electricity are passed through molten solutions of aluminum oxide and cryolite (which takes energy to heat) across graphite cathodes and annodes. Not only does this use a lot of electricity that has its own carbon costs, the oxygen that separates from the aluminum bonds to the graphite annodes, yielding more carbon dioxide (which is why the production of those Audi wheels is also interesting). In total, Mini says the recycled wheel production reduces carbon emissions by 75%. More specifically, it estimates about 0.16 kilograms (0.35 pounds) per kilogram (2.2 pounds) of aluminum used. Mini also stresses that this process still maintains all the strength of conventional wheels, just in a greener way. And of course, the wheels themselves are recyclable again. Mini, and BMW more broadly, are looking at ways to upscale the process and to source suitable recyclable products, likely other old wheels from cars no longer on the road. Though neither company said anything about when we'll see fully recycled wheels more widely available. Related Video: MINI Electric Pacesetter inside and out