I looked again at the link Ecto-Collector posted, and I say the ECTO-1 looks the best out of all the cars Hot Wheels is releasing. Looks descent, plus it actually has an interior. The yellow car on there seems to have only solid black windows and the other cars appear to be more for the younger kids.
I'd say Hot Wheels did an outstanding job on this car based on the previews. Especially for the ECTO-1, a very complex car with the geometry, lots of curved shapes and angles.