Big power is the theme of the moment at the Chicago Auto Show, with the Camaro ZL1 just unveiled and now the 2012 Hyundai Genesis R-Spec sedan on stage. We have some of the first live shots on the Web for you in the gallery above.

Powered by a 5.0-liter Tau V-8 engine rated at 429 horsepower, the Genesis 5.0 R-Spec Sedan is the new range-topper in the Genesis line. It shares its engine and eight-speed automatic transmission with the 2012 Equus sedan, due on sale this summer.

Follow the link for the full details on the Genesis R-Spec and other 2012 Genesis Sedan updates.