Owis latest solar racing model does not have one but two forms of power The solar fuel or battery tank which takes its nickname from its long and powerful frame will be a fan favorite for years to come Boys and girls ages 8 and up play the challenge of building their own dragster and once the assembly is complete they will have the opportunity to race their friends inside as well than outside The Top Fuel Dragster solar battery has a double XL solar panel strong enough to power the large frame on a sunny day Running out of daylight or not sunny outside No problem Switch the source of Power from the solar battery or battery to the AA battery compartment and the fun won t stop We envision Blue Ribbon capabilities at your next science fair Specifications . Ages 8 Above. Dimensions 8 25 x 3 25 x 3 in . Weight 0 34 lbs