Here in San Jose is a museum for kids called, ironically enough, "The Children's Discovery Museum".
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Inside are all kindsof neat things for little kids (and not so little kids) to do. Theyhave electricity experiments like pulling two bowling balls 45ft inthe air via pulley and rope, and when you let them go they turn agenerator which makes a ceiling fan spin and cools you off. Or thewater area where you put little balls in chutes of air and they gettossed into a funnel of water to be sucked out the bottom. All kindsof neat stuff. Anyway, on the main drag, they set it up so there's an intersection complete with traffic signals and crosswalks. On it they have a fire truck and ambulance, but they also have a little stand called the visible Volkswagen. It's a cut-away of the VW flat-four, showing the way an internal combustion engine works. Maybe a few future 'dub owners come away from checking that out.
Here's a couple pics:
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