Farmer Derek is turning 22! In Mars years, that is. He's celebrating the number of times he's watched planet Mars go around the sun — aka his "Mars Birthday" — with an epic party, so he thought he'd extend the invite to a special someone (we'll assume our invite got lost in the mail!). Who's that someone, you ask? None other than Elon Musk! So, what do you say, Elon — care to take the tractor for a virtual spin?