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Lego technic test track

five identical steel wild mouse roller coasters (with various names, three of which are still operating) manufactured by Mack Rides at Legoland theme parks around the world

Pronunciation
/ˈlɛɡəʊ ˈtɛknɪk tɛst trak/
/ˈlɛɡoʊ ˈtɛknɪk tɛst træk/