J.T. Nejedlo and Aidan Deaven have built a working backyard roller coaster.
With the help of a physic professor father and many hours working during summer vacations, the Wisconsin teens built the working coaster which starts in a treehouse.
The pair told The Week that the ambitious project had helped with college admissions.
https://theweek.com/speedreads/681785/teens-built-roller-coaster-backyard-got-into-college
