I think you could go a bunch of different directions with the idea; perhaps a poll of what others really wanted to see would be a good idea. For one, I think almost a Real Street Eliminator (hp & ft.lbs., 1/4 mile, braking, fuel economy, closed circuit lap time, ride and drive, etc.) concept would be a good place to start as it's using criteria that the big name magazines have already figured out is something readers want and can relate to.
While I had the idea originally coming from a sheer entertainement perspective, I have also realized how PRACTICAL something like this would be when building your own car. The other intangible is that one would have a really good idea of how cars like this stack up against actual production cars. Probably a lot better idea also to let guys like Mark and Charley give us an idea of what the limits on these cars are than us try and figure it out ourselves only to become a grease spot somewhere!
That's just one idea, what do you think?