That is so sad. Such a useless thing to happen. Sometimes kids do not need to be left alone on equipment. I know they can drive it just fine, but when someone is not watching them, they push the equipment to go fast, spin quick, brake, etc...... They push hard as it will go, to get the thrill.
I am not saying that this young person did, but equipment is not meant to be played on.
Equipment is very expensive to maintain, and can be dangerous for those that find it a toy. I guess this is one of my biggest pet peeves. So very sad for something that could have been prevented.