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Concept Car of the Week: Pininfarina CNR-PF (1978)

In the 1970s alarm bells were ringing in the energy sector as a series of energy crises and rising fuel prices spiralled. The car industry was forced to produce a new generation of more efficient cars and designers were putting new models through wind tunnels to optimize their aerodynamic performance to reduce aerodynamic drag. Some pushed the limits further than others and none more so than Pininfarina, which designed a car that slipped through the air twice as efficiently than any other.

One Lap of the Web: Forsberg can't stop, won't stop drifting

-- Jann Mardenborough won the "Nissan GT Academy" back in 2011 and since then has finished on the podium at the 24 Hours of Le Mans, as well as participating in the Infiniti Red Bull Racing driver program with aspirations of Formula One. He explains what it's like to move on from video games -- which he started playing at age 7 -- and transitioning into real sports cars. Mardenborough, it must be said, once drove too fast in British GT to be considered an amateur, but not quick enough to enter the pro class -- and race organizers, who didn't know what else to do, gave him a time penalty so the amateurs could catch up.

Exclusive: First video of 2014 Mercedes-Benz E63 AMG

Autoweek contributor J.P. Vettraino was recently invited to check out the 2014 Mercedes-Benz E63 AMG. It's the third version of the E63 we've seen since the current generation E-Class debuted in 2010.