Quoting Dave Teague
I like the centerline configuration for the wheels on this one. Also there are some pretty smooth lines in this model. It is good to see more than one alternate from you on this set.
Nice that you mention the wheel config. It was my idea to start a 4939-alt with such a base, without knowing what I was going to build on top of it. When I started building the centered wheelbase, I immediately started turning it into a scooter-like vehicle.
You might want to check out the LDD file, it has a slightly better backseat then the version in the photos.