California dad spent $3,500 building 180-foot backyard roller coaster for son

 A California father constructed a 180-foot roller coaster for his son after the child expressed interest. They spent six weeks working on the project, which cost around $3,500 to complete. The father used the project as an educational opportunity to teach his son about physics and mathematics throughout the construction process. Neighbors became curious and followed the project as it progressed in their backyard. A California father constructed a 180-foot roller coaster for his son after the child expressed interest. They spent six weeks working on the project, which cost around $3,500 to complete. The father used the project as an educational opportunity to teach his son about physics and mathematics throughout the construction process. Neighbors became curious and followed the project as it progressed in their backyard.