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

McLaren slows MP4-12C production for fixes

British supercar maker McLaren has slowed production of the MP4-12C because of quality issues. The company says the problems are not safety- or performance-related. "There are no safety concerns for the delay," Tony Joseph, director of McLaren North America, told Autoweek.

One Lap of the Web: The lost F-Type, a velvet Panamera and Lutz on being king

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Long before there was a Jaguar F-Type, there was the XJ41, originally conceived to be a lightweight successor to the XKE.

Cadillac teases Detroit 2013 concept at Pebble Beach

Cadillac teased a new concept car at the weekend at Pebble Beach to be unveiled in the steel at an unnamed American auto show early next year. We'll see you on the GM stand in Detroit then. During a press event Cadillac's Global Design Director Clay Dean said it was time for the brand to "reflect back not for nostalgia, but what made us great at the time." There were no further details about what we can expect from the concept but from what we can see from these renders is what appears to be a further move away from the geometry of the Art and Science form language towards a more sculptural surface treatment intersected by sharp, precise creases.