Here is what the fan posted in addition to the photos:
One of your BETA testers is actually a friend and we have been doing our best to raise awareness and support for this amazing title on Wii U and providing us with actual information and/or images would go a long way to grow the fan base and ensure good sales!
Just to let you know my level of commitment, I will also be purchasing this on PC as well, but I am honestly more excited to see and play the Wii U version, especially considering I built a steering column table mount for my Wii U gamepad SPECIFICALLY for this game!
So it seems that since Slightly Mad Studios won't show the Wii U version of the game, fans are going way out of their way to promote themselves. I do like that idea of using the Gamepad as a real life (in game) steering wheel as they have it set up here.
Now, how about some Wii U footage Slightly Mad Studios?