Just a follow up. In the next week or two this company will be releasing 28mm sci-fi cars. The application for a
40k game table seems obvious, especially as obstacles in an urban terrain setting.
The cars themselves are simple in design and low on detail, but their proposed price tag of $5-6 can't be beat, and I am sure with some plasticard, greenstuff, or spare bits could be easily
40k'd up enough to fit in with all things GRIMDARK.
Here is a pic:
Here is the thread taken from the Zombiesmith forums. The owner and operator even mentions considering selling molds of the cars so people can cast their own.
http://www.quarinvasion.com/forum/viewtopic.php?t=1417