Fun little Google/SpaceX trivia. For a long time, Google was the biggest SpaceX investor. Elon used to sleep in Larry's Palo Alto guest room for years... may still do so when visiting Tesla's Palo Alto office.
Larry has a Merlin engine in his office in building 1900 (Googleplex).
...and since you brought up Merlin engines.
Search YouTube for Jay Leno's Garage. He has one episode of firing up a Merlin on a test stand, and another of a Merlin powered custom automobile he bought and restored. He takes it out for a drive pointing out the engine is never running above idle.
Larry has a Merlin engine in his office in building 1900 (Googleplex).