Key FOBs are a really nice amenity. You would figure GM would go FOB on the 2016 since the debacle of hundreds of accidents and deaths due to the ignition key going into accessory mode and cars turning off while doing 65mph. A few pennies saved by GM caused the deaths of many of people. All car manufacturers are guilty of it but GM's recent debacle should have made key FOB's that much more standard on new cars.
Two sides to that argument: http://www.autoblog.com/2011/02/07/suit-alleges-toyota-keyless-start-to-blame-for-carbon-monoxide-d/