<p>High school students from Granite Falls, Washington, spend time after school with their teacher, test-driving a homemade diesel-powered car they will use to compete in a national competition for fuel-efficient vehicles.</p><p>The students call themselves the ShopGirls and have named their car the Iron Maiden. The six-member team has spent many hours before and after school designing and building the car for the <a href="http://www.shell.com/home/content/ecomarathon/americas/">Shell Eco-marathon Americas</a>, which will be held in Houston, Texas, April 14-17.<br><br>(Read story: "<a href="http://news.nationalgeographic.com/news/energy/2011/04/110406-shell-eco-marathon-all-girls-team/">All-Girls Team Seeks Record in High-Mileage Marathon</a>")<br><br>Team members Katie Jackson and Semira Kern wait to see the car in action, while teacher Michael Werner and volunteer Curtis Sullivan consult with Shante Stowell, a senior, in the driver's seat.</p>

On the Road

High school students from Granite Falls, Washington, spend time after school with their teacher, test-driving a homemade diesel-powered car they will use to compete in a national competition for fuel-efficient vehicles.

The students call themselves the ShopGirls and have named their car the Iron Maiden. The six-member team has spent many hours before and after school designing and building the car for the Shell Eco-marathon Americas, which will be held in Houston, Texas, April 14-17.

(Read story: "All-Girls Team Seeks Record in High-Mileage Marathon")

Team members Katie Jackson and Semira Kern wait to see the car in action, while teacher Michael Werner and volunteer Curtis Sullivan consult with Shante Stowell, a senior, in the driver's seat.

Photograph by Harley Soltes, National Geographic

Pictures: High School "ShopGirls" Design for the Prize

An all-girl team of high school students from Granite Falls, Washington is building a car to compete in the Shell Eco Marathon.

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