After teasing the second generation CLA's curvaceous exterior, Mercedes is giving us a peek inside the cabin before the car makes its world debut next week at CES in Las Vegas. In a video posted on the automaker's Facebook page, we get a demonstration of some clever new tech linked to the advanced MBUX infotainment system that debuted in the A-Class. Mercedes is calling it an "Interior Assistant," which simply uses motion sensors that detect the driver's hand movement and automatically activates the interior lighting.

Also note the "Edition 1" logo at the top of the dashboard on the passenger side, which means we're looking at the limited-edition CLA Edition 1 that will only be available for the first 12 months. Expect it to feature more equipment and unique styling for an extra cost like other new Mercedes Edition 1 models.

Details about the new Mercedes CLA are still slim, but recent spy photos have shown it will essentially look like a shrunken-down CLS. Now that the A-Class sedan represents the entry-level sedan in Mercedes' line-up, expect the new CLA to be larger and more luxurious than its predecessor. It will also share the architecture and interior design of the A-Class, so expect the cabin to feature dual 10.25-inch screens and the new MBUX infotainment system.

Also expect engine options from the A-Class to carry over, so US customers will get a 2.0-liter turbocharged inline-four that produces around 200 hp mated to a seven-speed dual clutch transmission. If you want more power, hotter versions will eventually join the line-up including a 302-hp CLA35 and 400-hp CLA 45. Mercedes will lift the wraps off the new CLA at the 2019 Consumer Electronics Show in Las Vegas on January 8.