It's interesting what you see as an adult. In Down on the Farm Gadget didn't pay for the gas he thought he was pumping.
If he did he would have found out that he didn't actually get any gas.
And when he found the gas at the farm he didn't leave any money for it.
The writers just glossed over the whole thing and figure kids wont notice. Also the cop cars at the end were refereed to as agents. That's a bit odd.
Maybe there's a reason for that, but I'm not quite sure what it is. I really liked the moral at the end of the show about the dangers of farm equipment and animals. It fit in the story well and didn't seem forced or completely separate from the show. This was a wonderful episode. :)