Ohio couple spent $700 building 12-foot backyard roller coaster for their kids

Some become parents by choice, and such parents give their children the best lives possible. How else would you describe an Ohio couple who built a roller coaster in their backyard for their kids?Jon and Natasha Cain of Lancaster, Ohio, spent a few weekends and $700 on something their kids would remember for years: a roller coaster in the backyard, according to a report by ABC News. They had no engineering training but had the willpower to teach themselves the basics of how a roller coaster works.A summer projectMost kids would spend their summer holidays at a theme park. But often, the thrill of a ride is accompanied by a long queue. In the summer of 2009, the Cains took on the project of building a roller coaster. They used readily available materials that one could pick up at a local store: wood, concrete and PVC pipes.