Big Grizzly Mountain Runaway Mine Cars Attraction at Hong Kong Disneyland, opening July 14, 2012. Using the ride system developed for Expedition Everest at Disney’s Animal Kingdom, it is a multidirectional coaster, with cars that can hold up to 24 guests. They ride through mountain caves, trying to avoid mischievous resident grizzly bears, zip through the land backwards, and end with a powerful and surprising high-speed launch that sends the vehicle racing.