This is from the German version of TopGear, released during the launch of the Opel GT (Solstice, Sky, and Opel GT are all Kappa cars). In a nutshell, they loved the total package of strong/aggressive performance and price! It's also the first piece that I've ever read/seen where they liked the suitably, practical soft top operation.
Even if your German isn't up to snuff, it's great to watch a Kappa car hammering around the track. Really looks at home and smoother than the Z4. They do state that the Kappa's steering feel is better than Z4.