A little boy and his tractor

Seamus thinks loud noises, machines, worms, and TRACTORS are the greatest things in the world.  Well, the other day, I couldn't find him anywhere.  Not in the cabinets, behind the couch, in the bathroom playing in the toilet, upstairs, in the toybox, or playing in the washing machine.  Hmmm, all his usual places.  Just then, I noticed the garage door open.  I look out in the garage, and I finally found him....