Build by Toyota motorsports partner Gazoo Racing, the GRMN iQ Supercharger is just the sort of concept car that's too wild to ever become a reality. Right? Wrong!

To the surprise of, well, everyone, Toyota has announced it will offer a limited production of the car, which was unveiled in its second-generation prototype stage today at the Tokyo Auto Salon.

Based on the 1.3-liter version of the iQ (it's largest engine option), GRMN engineers have strapped on a supercharger to increase power output from a factory 94 hp, up to 130 hp, while torque increases from 89 lb-ft to 133.

More: Production confirmed for GRMN Toyota iQ Supercharger: 2012 Tokyo Auto Salon on Autoguide.com

Japan's aftermarket auto parts and racing expo, the Tokyo Auto Salon features displays by all major domestic automakers including Honda, Toyota, Nissan, Mazda and Subaru. Tuners from NISMO to TRD and Mugen display their latest products and point to the future of the Japanese tuner industry. The 2012 show promises to be a big one, thanks to the debut of the Toyota GT 86 and Subaru BRZ.

More: TAS 2012 Coverage on Autoguide.com

For some of the more minor auto shows, a Top 10 list of the most important cars often covers most of the new debuts, but not so at the North American International Auto Show. Held each January in Detroit it's the obvious launch site for major products by the Big Three domestic automakers and over the years has also become the venue for important new models by the rest of the auto industry.

Domestics made their mark at this year's Detroit show, starting with one very different concept car revealed by Chevrolet. Called the Tru 140S it may look like some outrageously fast and expensive exotic machine, but it's neither. Based on the same front-drive platform as the Chevy Cruze, it is powered by the same 1.4-liter turbocharged 4-cylinder, which makes just 138 hp in that car. Designed, along with the Code 130R concept, as part of an initiative to attract youth buyers back to the brand, Chevy seems serious about the concept, even announcing that if it made production, the target price would be around the $20,000 mark.

More: Top 10 Cars of the Detroit Auto Show on Autoguide.com