After years of figuring out many ways not to make a solar panel, the Brusaws have developed a modular-panel paving system that’s attracted interest from the Federal Highway Administration, General Electric, and even Google. If their Indiegogo campaign, started this past Earth Day, receives $1 million by the end of May, the Brusaw’s company, Solar Roadways, will be able to test its heavy-duty tempered-glass product in parking lots and eventually highways throughout the country.