World of motion and Horizons. World of motion and Horizons were rides that today would be boring to most, and not very popular. Test Track and Mission Space on the other hand, are thrill rides which are VERY popular in Epcot even though Mission Space has been lacking recently. When it comes down to it, to most people Test track and Mission Space>World of Motion and Horizons. And now its time to go into my fallout bunker.