remove batteries from transmitters.... so when your gone they don't leak, corode... bad things like that, maybe put the car under a blanket.... just to keep the dust off, alot of people remove the air filter/pipe and stick the "fingers" from a glove over the openings after drenching the motor in after run oil, hold the fingers of the glove on with a small rubber band. Drain your fuel tank so when your gone the fuel doesn't "dry out" and form alot of gunky residue (bad).