Nnnnnn-nnn...splutter, yang-yang...Nnnn-nnn!...rrrrrrevvv-vvv...RRRrrooooAARRR! rattle, rattle...clunk, shreech!...creeak... clank....rrrrrr. Thunk...scrape...Nnnn-nnn.
(The sound of DiFi starting up the in-house Bobcat for major backfilling)