Here is a drawing of what I came up with for the Citation Super 600.
Jay Novak and I have been batting this idea for years and this is my answer to this idea for a car. I do think that $30,000 is a reasonable target for this car.
I am not all that good modeling surfaces in SolidWorks. This is my excuse for the body drawing.
This design is ready for construction. Adding fenders to this car would increase the cost by thousands. I have also changed the engine package to a Fit and FF type transmission. The package has some interesting features that make it very attractive.