Peter Hughes of Highway Energy Systems Ltd. is an electrical and mechanical engineer responsible for many sustainable technological innovations. He spent years as an environmental consultant to the United Nations. Hughes developed ways to use solar-powered cooking at night for third world countries, and ways to force water into arid climates. But none of his accomplishments is as impressive as his most recent innovation. The electro-kinetic road ramp, or as he refers to it, his “prized jewel in the crown,” is already making an impact in the UK and will soon be coming to the United States. In development for...