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Porsche Rennsport IV rolls on at Laguna Seca

Heavy fog for the morning qualifying runs didn't seem to dampen the spirits of competitors nor the thousands of fans attending Rennsport IV at Mazda Raceway at Laguna Seca. Billed as the largest gathering of Porsche race cars and drivers, the day was filled with on-track action as well as a concours of historically significant Porsches from the past 40-plus years. Three classes of race cars competed on Saturday.

NHTSA probing coolant leak in Porsche 911?

In another embarrassing failure to understand what they're supposed to be regulating, the NHTSA has announced that they are investigating a “coolant leak” in Porsche 911s that were built with the GT1 engine block between 2001 and 2007. Maybe when they said coolant, they were talking about the oil that circulates in a 911 to keep the engine cool? Next thing you know, they'll be checking out fuel pumps on the Tesla Model S!

Infiniti announces M35h performance, CO2 figures

Infiniti has confirmed the official performance, emission and fuel consumption figures for its first hybrid, the M35h. The figures are impressive, too: the Infiniti M35h is quicker, cleaner and greener than its petrol or diesel siblings, and not far behind rivals like the BMW 5-series. Let’s start with what you get, and under the bonnet is a 3.5-litre V6 that Nissan 350Z owners might recognise.