Global sales are up nearly 16% compared to last year and automakers are on track to sell about 74 million vehicles before the year is over. Nissan showed off a two-seat electric car this morning, which it calls the New Mobility CONCEPT. Ford is set to show off a specially tuned undercover-version of its new Police Interceptor at the SEMA show. All that and more, plus John test drives the Chevy Volt.