Team Panjavidhya 1 of Thailand's Panjavidhya Technical Training School participates in the Shell Eco-marathon fuel efficiency challenge at Sepang International Circuit in Sepang, Malaysia, Saturday, July 10, 2010. The race is an educational project that challenges competing student teams to design, build and drive the most energy-efficient vehicle. The winning vehicle is the one that travels the furthest using the least amount of fuel. Some 81 teams from 10 countries in Asia are participating in this competition. (AP Photo/Lai Seng Sin)