My oldest still recalls the time we were at his Grandad's place, and Grandad had us out in the field stringing electric fence in the heat. After a couple of hours Grandad says, "Kevin, go ask your Grandmom to send us out a jug of ice water!", to which Kevin replied, "Aw Grandad, I don't want to walk all the way back to the house!!" He was about 12 or 13 at the time, but pretty tall for his age. Grandad says, "Who said to walk? There's a good truck right there (his '72 F150 automatic). Can you drive it?" Of course he pumped up and said "Sure I can drive it!" Then his grandpa got serious and said, "Now there's a gate by the barn you need to open, and close it behind you so the bull doesn't get out, and another gate from there to the house that you have to close to keep the bull from running up the road. Don't run into my gates." Long story shortened, he hopped in, idled to the house, and idled back with a thermos of water. Didn't say much about it, but after 30 years he still remembers how scared he was!! Let 'em drive where it's safe!! They'll remember every detail.