Is a Mercedes benz SL550 a good used car to get?

I'm looking to replace my current ford focus with a 2015 Mercedes Benz SL550. The car only has 7,000 miles on it and I'm wondering if this would be a good car to drive year round. I live in Chicago so I don't think I will have a lot of problems in winter conditions. Also I'm 25 years old and I think I would look good in this car.

What is a good website for Ford Focus modification info with video reviews?

There are a couple interesting "mods" that I've found that make driving a Focus a bit more fun. However, a lot of these mods don't have decent review videos for me to see how they change sound, performance, etc (I have already tried YouTube). The video in particular that I'm trying to find right now is a one that shows how removing the air box from the Focus affects the sound of the car from outside of the vehicle while it is accelerating. Any decent source for info and reviews will be appreciated though.