theres a guy in my city who owns one. i see it like 2 times a year. he also owns a bizzarrini 5300 gt. guy has taste.
Ohh, that's not an SLS. That's an AMG GT. This is an AMG SLS GT http://www.autocar.co.uk/car-review/mercedes-amg/sls-gt
If I remember correctly, from 2010 to 2014 it was called a Mercedez-Benz SLS AMG, since 2015, it's called a Mercedes AMG GT.
The chassis is a shortened SLS, with the front axle from the SLS. Rear axle is new, and the engine is a 4 litre twin turbo as opposed to the 6.2 N/A in the SLS and the gearbox has been re-engineered and is meant to be a lot better than the SLS. Interior is all new, etc. It's almost entirely a new car, but not fully. It's more than just the name as stangman said