I'd love to see an Illuminator post (or series thereof) highlighting those old B/W 3/4 view concept arts. Even/especially the weird ones, like the half tracks, or the one on the second link here, which I don't recall ever having seen, even back in the day. Were these you, Sam, or Brandon Moore, or a mix?
http://www.sjgames.com/img/newsq/illq/2016/CarWars1.png
http://www.sjgames.com/img/newsq/illq/2016/CarWars2.png
The miniature currently know as Spike is in there somewhere too, essentially unmodified.