i hear ya. my son's 19 months. took him for his first ride around the yard at about 7 months. probably for the last 10 months if i'm out there workin on the quad he's out there grabbing wrenches, hammers, rachets, whatever and banging on the quad. if i take him outside he runs right to the shed.
i took him outside today in the snow and he was walking over there mumbling vroom, vroom, vroom. then he got pissed when i didn't unlock the shed.
they are a blast that's for sure