California has given carmaker Volkswagen (VOWG_p.DE) until November 20 to come up with a plan to fix the diesel cars affected by its rigging of emissions tests, a spokesman for the California Air Resources Board (CARB) said on Friday. Volkswagen has said up to 11 million diesel vehicles worldwide need to be refitted because they could carry software designed to manipulate emissions tests. The CARB spokesman said the deadline represents 45 business days from an in-use compliance letter sent to Volkswagen dated Sept. 18.