With gas prices on the rise, imagine a car that gets more than 1,800 miles per gallon. Thats exactly what some Mater Dei students have designed, and its called a super-mileage car. The group of students are taking two of these cars to California, to compete in the Shell Eco-Marathon, a competition to design a car that gets as many miles per gallon as possible. More than 20 high school and college teams will compete for the top prize of $10,000. The Mater Dei group will fly out to California next week, the competition begins April 12.