Hello, glad that you're enjoying the mod! That sounds like a really cool use case; I haven't played much of SE myself, but it sounds pretty interesting!
Added grid compatibility to AAI Vehicles Hauler, Miner, Warden, and Flame Tumbler; the only AAI Vehicle mod without a grid is the Chaingunner, since that vehicle is so early in the tech tree, and obsoleted before even having access to grids, so I can't imagine there being any reason for it having a grid. Flame Tumbler is basically a better car, so it gets the same one; Hauler and Warden are just big and bulky enough that they look like they should have grids; and I couldn't pass up having progressively better grids on the Miners, so I wanted to add those as well.
I ended up also adding grids to the Space Trains, since they just look too cool not to add them. I didn't really check where they were on the tech tree in terms of balancing, but something that looks that futuristic should probably have grids.
Implemented v1.0.9