After 10 months of work and support from a volunteer team of parents and community members, a group of students from Mater Dei High School in Evansville, Ind. won the AutoZone’s Show It off America social media contest last week. The contest recognizes the best DIY automotive projects in the country. This spring the eco vehicle also took second place in the Shell Eco-marathon Americas competition for an ultra high MPG vehicle. At 849 MPG, I’d say that’s pretty high.

The single-person car has an aluminum frame and is powered by a 50-cc engine

“It felt great,” said 17-year-old team member Kyle Haas on winning the contests. “We put all that work into it.”

For nearly a decade, the parent and volunteer led team has been designing and making cars in Evanston and entering them in contests around the U.S. This year the team created a totally new design from scratch by first creating it in CAD, building a foam mold, and then a carbon fiber shell.

See the step-by-step progression of the car’s shell here: