How a Zamperla Demolition Derby Works - The Explanation

Last week I was trying to figure out how a Zamperla Demolition Derby ride worked. After a lot of research and digging through the interwebs I have finally found some answers. I actually haven't figured out how Zamperla's modern version works, but I have found a few patents for earlier versions of the ride. You see, the demolition derby is actually based on a ride called "the crazy daisy" (or crazy dazy) built by Philiadelphia Toboggan Coasters (PTC). There's also another variation called the Cuddle Up (or cuddle-up) which I think depends on the number of turntables involved. Anyways, here are a few of the patents with diagrams of the flat rides with intersecting ride paths:

How does a Zamperla Demolition Derby work?

Can anybody here explain how a Zamperla Demolition Derby ride works? From my understanding there are two turn tables which spin in opposite directions and the cars, which are free to spin in their own independent circles, are transferred from one turn table to another. It's the "hand off" between turn tables that specifically interests me. How do they do it? This ride system is used at the Disney studios park in Paris as Cars Race Rally. A new twist on the design is being built at California Adventure as Mater's Junkyard.


http://en.wikipedia.org/wiki/Cars_Race_Rally
Zamperla Demolition Derby - YouTube


And check out 30:09 in this video to see a picture of the turn tables exposed: Radiator Springs Reality - Imagineering Cars Land - D23 Expo 2011 - YouTube