It looks like most here were getting smoking deals on these, but I had no luck there beyond a few coupons. So these days you're looking at $200 vs $330 ea. The premiums are clearly better, but had I not seem them side by side, I'd be perfectly happy with the ready to assemble version. You can...
My new house had a bunch of Gladiator track installed in from the previous owner. It seemed logical to go with this flavor of wall cabinet.
I inadvertently ended up with both the cheap and the premium versions though. I originally ordered the cheap 'ready to assemble' versions from Overstock...
That Mustang is bad ***.
You should look at Google Sketchup. Not as capable as the software mentioned previously, but it's free and has huge libraries of user generated models already available.
http://sketchup.google.com/3dwarehouse/search?tags=cars