Not really feeling vehicles, seems like an alright idea, I just was hoping for something a little different, like maybe "Crew 1 (Tap any number of creatures blahblah. ~ Gets an additional +1/+1 for each creature tapped after the first)". This would make it seem like Mad Max, this guys hopping on wherever and having spears or something to do damage.
Or maybe "Crew 1. ( Tap any number of creatures blahblah. If ~ would die due to combat damage this combat, untap a creature for each creature tapped after the first)". This would be like the driver is hurt but everyone else just jumps out, ready for whatever.
Just something to make it seem like this guys are getting in this rig and attacking. The way they are now just seems like an artifact that has a cost to become a creature and feels like something I've already seen before, even if I haven't. And don't really see why they have a different border either, looks like it will cause confusion for Delirium, since they are just artifacts, right?