Limited natural resources and environmental pollution are just two of the numerous reasons why our present system of transportation needs to go green. Scientists across Los Alamos National Laboratory are participating in several collaborations and national consortia to build inroads toward a more sustainable system of transportation. From vehicle lightweighting to alternate fuels, from hydrogen fuel cells to unmanned vehicles, all avenues are being explored. The future of driving depends on improving the economic and ecological impact of how we build and drive our cars.