Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

More shots from SEMA 2013

We finally found our way back home from SEMA, drained the sand out of the camera and came across a few more cool cars. Davey G. Johnson already sent his leftovers and we hear Blake Z.

Mercedes F125 Hydrogen Fuel Cell Concept leaks

Mercedes F125 Hydrogen Fuel Cell Concept It’s probably going to be like this for a few days, with leaks ahead of reveals as Frankfurt looms. Now we have a bit of a surprise from the boys at Benz, with the leak of a photo of the Mercedes F125 Hydrogen Fuel Cell Concept. Possibly pointing the way to the next generation S-Class – or maybe the one after, or the one after that, or… – the big gullwing coupé comes with a proper set of green credentials and, for a real change, green credentials with a future.

Reuss: GM considering 'something really fun' for Buick

Buick dealers still salivating over the Riviera concept that General Motors unveiled at last month's Shanghai auto show should take a deep breath: There's little chance that the flashy coupe will ever grace a Buick showroom. But they should view the Riviera -- which GM says points to the brand's design direction -- as a signal that GM is serious about adding pizazz to the Buick lineup now that the 110-year-old brand, which barely survived GM's bankruptcy four years ago, is getting comfortable in its born-again skin. "We've very carefully built Buick back to a brand that has respect," GM North America President Mark Reuss told Automotive News.