Steve,
That was a cool thing ya did, no doubt the young man left with a little more knowledge and learned that not all cool things come from an electronic game box!
Before you bought that tank, I did a similar thing with my niece, I think she was 7 when she saw uncle Will driving 931 in the back yard. She wanted to drive it too, and since I am her only uncle how could I decline. Needless to say, she had a blast driving it!
Will