There's probably also power metal about horses, folk metal about plowing fields, and pornogrind about fucking sheep. Is there a groove metal song about John Deere tractors and combines? If not, there should be.
weird request. but yeah, gojira came to my mind straight away as well. got to start with the 'from mars to sirius' album, by far their best. (gojira is the closest i could think of anyway)