Concept - Core Taxis

I had quite a bit of trouble with this. I'm no good at vehicles -- so I'm going to be speed painting a few from reference in the coming days to get better! Also, I have an idea in mind to redeem this concept and actually make something useable from it for my website, because I do like the ideas behind it, and a civilization (like Core) does need its identical taxis.

Within Core, taxis are small pod-like vehicles, mostly one-person, that are completely automized, picking a person up from one location and whisking them away to another. They have very few features in common with our cars -- they are lacking wheels, using the magnetization of the isles and the technology of underwings instead, and carry only a very small engine in the back (with vents in the front as well) that uses air technology like that of Sylphs of the Academy for propulsion and braking. The pods are minimalist and just barely comfortable, for the isles are small and use of space is often at the forefront of Cores' machinists' minds. With passenger(s), the taxis black out completely, the windows tinting so it is impossible to see inside, and the entire outer skin turning to an almost seamless black, alerting humans which taxis are available and which are not.