CARS.COM — Cadillac is encouraging drivers to take their hands off the steering wheel of the 2018 CT6 luxury sedan — but only when it’s equipped with its next-generation cruise-control system, called Super Cruise. Cadillac provided us with a brief hands-on, or rather hands-off, demonstration around Chicago, where we got up to highway speeds and slogged through congested traffic using the system, which will be available on 2018 CT6s shipping to dealerships now.