The guy that owns that GNX is on
http://www.turbobuick.com
The new "GNX" is just a hopped-up Regal. 300hp with a supercharged V6. Unfortunately it's wrong-wheel drive.
While most Turbo Regal guys are supportive of the concept of a 300hp supercharged V6 Regal, they don't want it called "GNX".