Future

What:  A luxury coupe that will function as an electric car for 40 miles before its gasoline engine starts

When: No production date has been announced

Price Range: No price range has been announced.  The Converj will likely use much of the same technology as the Chevy Volt, which may cost up to $40,000 -- but the Converj, as a Cadillac, will almost certainly command a higher price than its Chevy cousin.