In this episode of NJEA's Classroom Close-up, Eighth graders from Linwood Middle School in North Brunswick, NJ investigate alternative power sources for cars of the future. Students follow an engineering sequence of defining a problem, researching solutions, documenting the design process, and using trial and error to refine their design. For this project, groups of students design model cars powered by solar cells, hydrogen fuels cells or electric motors. Students apply their knowledge of physics, materials, and design in the hand-son STEM project.