Thanks for posting this video! This game looks nice.
What gives Model 3 games that distinctive "look" on the arcade screen -- (and I suppose this is true for all 3D hardware, albeit in different ways) is the lighting and shading. At this point, I think most of the lighting parameters are understood but some of the shading details, namely exactly how material properties are applied and where the specular component is defined, are not quite there yet.
I haven't yet hooked up ECA in Supermodel. I've got a huge back-log of things to do. If it's like other Step 2.1 games (Ocean Hunter, Harley, LA Machineguns), it's not likely to work very well.