The Ray is a successful P4 innovation research facility resulting from a public, private, and philanthropic partnership. It has been the first in the country to install a solar road, has added a solar-powered electric vehicle charging unit that can replenish 80 percent of an E.V.’s battery in 30 to 45 minutes, and opened the country’s first free roll-over tire safety stations – which will read tire pressure and tread depth to let you know if you are wasting energy by incorrectly utilizing your vehicle’s tires.