
While the Chevrolet Volt plug-in hybrid and the Chevy Malibu Hybrid rack up four-figure sales in most months, the third vehicle to use elements of that same drivetrain remains all but invisible in the U.S. That's the 2017 Cadillac CT6 Plug-In Hybrid, a version of the CT6 large luxury sedan from GM's luxury brand. The plug-in CT6 is the sole...