I really enjoyed this one, though I'll admit that Ironband has a chokehold on me generally. The way the prose speeds along with the chase is interesting. Short statements, brief thoughts, only what one needs to survive in the moment. I will say that there are moments where it got too confusing, where I have no idea what's going on, there were too many details brushed away or lost in the confusion. Only two or three though, not a ton. Overall, I liked it. Another little characterization to make everything feel a bit more robust.
I also really like the title. It's a weird compliment to pay, but there's something about it that feels… crunchy, I guess. The caps, the joining of two words, I dunno. It really helps that whenever I read it I think of the chant in the song Motor Spirit which has an "engine hum" quality to it.