What the Hell?

This is Mercedes's E-Class Diesel for the US. Notice anything? They haven't equipped their very hyped-up signature LED's on this model. Why is this? They promote this car and use the LED's to sell it. It doesn't make sense to me why they wouldn't include them on some models. It's the same story with the 3-Series also. Any other cars that are promoted with LED's but don't always come with them?

Source: Autoblog's "QuickSpin" http://www.autoblog.com/2013/12/26/201...