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Super Cruise will make 2018 Cadillac CT6 semi-autonomous

General Motors has been working on its semi-autonomous driving system for years. Called Super Cruise, it had initially been slated for a fall 2016 debut. Of course, something as critical to safety as a self-driving system should ideally have the bugs worked out before putting it in the hands of customers, and the launch date had to be pushed back. It appears that Super Cruise is road-ready now, as Cadillac has announced the system will be available in the 2018 CT6 sedan when it goes on sale this fall. Super Cruise offers hands-free driving on the highway, taking control of steering and speed under the supervision of the driver. An attention detection system – a camera and infrared lights that track head position – ensures that the driver is paying attention and is available to take over driving responsibilities. If needed, Super Cruise will initiate a series of nags, including a flashing light bar on the steering wheel, to regain the driver's attention. If the driver is unresponsive, the system can bring the car to a safe stop and use OnStar to call first responders. The system employs a suite of sensors, cameras, and GPS, as well as precision lidar-scanned map database, to place the car where it needs to be on the road and in the center of its lane. It only works if the sensors detect appropriate road conditions, and is limited to the more predictable terrain of divided highways with on- and off-ramps. Yes, it's limited, but safety is paramount, and drivers who spend a lot of time on the highway will appreciate the convenience nonetheless. Related Video:

Cadillac's Super Cruise — look, Elon, no hands!

Cadillac is about to start selling vehicles with an autonomous driving mode and TechCrunch got an early look at the technology in a production car. "Wait for the green light and let go," the Cadillac engineer instructed. That's it. The car was driving itself. I, the person behind the steering wheel, was no longer the driver. Cadillac's Super Cruise system was driving. The 2018 Cadillac CT6 sped along U.S. 23 under the direction of Super Cruise. Traffic was light and the weather was perfect. The system held the Cadillac sedan in lane and responded appropriately to traffic. I spent an hour on the expressway and touched the steering wheel and pedals only a few times. Super Cruise made the drive boring. I think that's the point. Here's how it works Super Cruise is available once the driver navigates the vehicle onto an expressway. When ready, a little icon is displayed by the speedometer and the driver hits a button on the steering wheel to switch it on. Once the light bar on top of the steering wheel turns green, the driver can let go. Super Cruise is driving.This steering wheel light bar is key to the operation. When green, the driver knows Super Cruise is in control. Blue means the driver interrupted the system to change lanes and red means Super Cruise needs the driver to confirm they're paying attention and not checking Twitter. When active, Super Cruise controls the steering and speed, but again, only on an expressway. This is done through onboard sensors and using GPS and mapping data. GM employed GeoDigital, a startup in GM Venture's portfolio, to map 160,000 miles of expressways in the U.S. and Canada. The car company then used Super Cruise-equipped vehicles to test each mile. This combination of onboard systems combined with map data makes the system feel polished and sophisticated. During my admittedly limited time in the vehicle, the CT6 precisely held its position in the lane and confidently handled sweeping curves at speed. There was no wiggling or squirming — from the Cadillac or myself. The car was in control, and I felt safe. Although the driving conditions were perfect for my test ride, during adverse weather, the system will work normally until one of the key systems is unable to operate.

Weekly Recap: Automakers rethink the definition of luxury

Variety is the spice of life, but it's becoming a prerequisite for luxury carmakers in the ultra-competitive US market. The Detroit Auto Show was strong evidence of this reality. It's not enough to offer attractive and well-appointed cars and SUVs anymore. Luxury brands that want to be competitive need to invest in everything from high-powered supercars to clever hybrids. To be relevant, you need to be green and mean – and everything in between. As General Motors product chief Mark Reuss said after the reveal of the 640-horsepower Cadillac CTS-V: "We are not leaving anything on the table." He was speaking for Cadillac, but he might as well have been speaking for the luxury car market. The CTS-V debuted in Detroit about an hour after Lexus surprised showgoers with the reveal of the RC F GT3 race car and then announced ambitious plans to return to competitive racing. That almost overshadowed the fact Lexus had just revealed another potent addition to its growing F line, the 467-hp GS F. View 20 Photos But for luxury brands, it's not just about maximum horsepower for well-heeled enthusiasts or decadent amenities for the Grey Poupon set. Strong competition from all corners has forced automakers to refine and expand their lineups in ways unforeseen even a few years ago. Case in point: Mercedes-Benz finally has an answer to the BMW X6, rolling out the GLE coupe in Detroit. The X6, which blends coupe-like styling cues with some of the functionality of an SUV, debuted in 2008. Back then it was a punchline, but seven years and more than 260,000 sales later, the X6's success has compelled Benz to respond. Mercedes – one of the strongest proponents of diesel technology – also debuted the C350 plug-in hybrid sedan, which promises a range of 20 miles on electricity, though fuel economy figures were not announced. The car pairs Mercedes' well-received 208-hp turbocharged four-cylinder with an electric motor for total output of 275 hp and 443 pound-feet of torque. Meanwhile, Infiniti will add the Q30 hatchback to its lineup by the end of the year, new president Roland Kruger reiterated in Detroit. It's expected to be joined by a crossover variant, and the additions will help strengthen Infiniti in the United States and abroad. "While we're expanding our product line, we're also expanding our market reach," he said. That's something echoed by Jaguar executives, who are preparing to launch the brand's first crossover, the F-Pace, in 2016.