Lamborghini’s U.S. Chief Leaves

Volkswagen AG's Lamborghini unit says it has "terminated" its relationship with Michael Lock, the chief operating officer of its North American unit since January.

The supercar maker has provided no reason for Lock's departure.

Automotive News says Lamborghini sold an estimated 500 cars in the U.S. so far this year compared with nearly 480 in January-November 2012. The company markets two two-seater models, the $200,000 Gallardo and $450,000 Aventador, along with more expensive variants of both.