Easter Egg? Brrr might-be-an-Easter egg

So, I think I might of found an Easter egg. If you hit I think it was 20 000 - 40 000 km/h, instead of saying 30 000 km/h, it says brrr. can someone confirm this?

Just saying, but I was dragging my car up by dragging nodes in orbit and then making it suddenly top-down view, so the car would get propelled up.