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MotorWeek fondly remembers the 2000 BMW M5

The Retro Review series from MotorWeek tends to reminisce about vehicles at are at least 20 years old and often from even further back. However, the show's latest recollection shines the spotlight on a fondly remembered sports sedan that's also a modern classic: the 2000 BMW M5. Years before BMW committed to downsized engines with turbocharging and shortly prior to the introduction of iDrive, the E39 M5 showed the Bavarian brand's engineering talents at their very best. By modern standards, the sedan's powertrain is almost antiquated. Up front, there's a big, naturally aspirated V8 that sends power to the rear wheels, and the only choice of transmission is a six-speed manual. But as MotorWeek explains, the tuning of the whole vehicle comes out to near perfection. This is a model that's definitely worth remembering.

BMW to offer carbon fiber wheels in a year or two

The Citroën SM sat on the first set of production glass fiber and resin wheels in 1972 when parent company Michelin developed the exotic hoops in order to take the SM rallying. It wasn't until 2008 that we got the first all-carbon-fiber wheel for passenger cars in the form of a prototype model from Weds Sports in Japan that remained a prototype. Australian company Carbon Revolution followed that a year later with its CR-9 all-CF wheel, first introduced on the Shelby Ultimate Aero and now available for independent purchase for about $15,000 per set. BMW could be the first OEM to offer entire wheels in carbon fiber reinforced plastic in two years.
The wheels - either all-CFRP or using a CFRP rim and alloy spokes - were shown off during BMW's Innovation Days in Munich and are products of the development work done on its i-branded cars. The full-CFRP wheel is 35-percent lighter than a forged alloy wheel, the hybrid alloy and CFRP wheel is 25-percent lighter, making for a decent drop in unsprung rotating weight. As demonstrators during a tech day the wheels aren't yet in the pipeline for production and EU approval, but an article in Auto Express claims that they could be on the market as soon as two years from now.
Other possible parts include a full carbon fiber steering wheel and propeller shaft, the latter of which is coming as a single-piece component on the new M3 and M4. BMW is also talking up its use of secondary carbon fiber - waste material from i3 and i8 production - that can be used for items like IP support structures, seat frames and spare wheels in place of traditional metals like aluminum and magnesium. There's an excerpt of the Innovation Day press release below with more details.

Recharge Wrap-up: BMW i3 to get more range, a call for EV signage

The BMW i3 will get more range next year, and BMW will announce another i model soon. BMW CEO Harald Kruger didn't say by how much the i3's electric range would be expanded (it currently gets 81 miles on a single charge, or 150 with the range extender). He did say that a third, yet unnamed i car would be out "soon," and that it would be larger than the i3. We've heard rumors of an i5 for years now and BMW has previously stated that a new i car would not be based on an existing model. Read more at Green Car Reports. Where is the sun visor in the Tesla Model X? With a huge panoramic glass roof, Tesla had to be pretty inventive with its design. The sun visor is tucked away in the A-pillar and held in place by a magnet. It pulls out, and swivels overhead. A magnetic peg pops out to attach the end of the visor to the rear view mirror housing. From there, it can be rotated, or one can flip out a panel to create a larger shade. The vanity mirror is hidden behind another panel inside the visor. Have a look over at Teslarati. Nissan and Ecotricity are calling on the UK government to create road signage for EV charging points. There are currently over 9,000 places for drivers to charge their electric vehicles throughout the UK, but no official signage to tell them where they are. "It's time to introduce charging point road signs in Britain," says Ecotricity founder Dale Vince. "They'll provide necessary direction for the thousands of electric car drivers in Britain as well as increasing public awareness that the infrastructure is ready for them to make the move to an electric car." Nissan and Ecotricity suggest that symbols to designate the different types of charging available would also be helpful to EV drivers. Read more at Green Car Congress, or in the press release below.