Twitter just revealed to me the wonder that is the Etherington Brothers, comic artists extrordinaire. It looks like they have lots of funky ideas for everything from hovering hot-rods to hickpunk spaceships:
There is LOADS more where these came from. I could see anyone who likes sci-fi and cars getting well lost in there:
This is their Twitter account: @EtheringtonBros
This is their blog:
http://theetheringtonbrothers.blogspot.co.uk/2016/09/both-full-sets-of-rocketspeeder-designs.html