Olli, created by Arizona-based Local Motors, officially hit the streets of the nation's capital Thursday. Using an app similar to Uber or Lyft, ride-seekers can order the bus to pick them up and drop them off at their destinations of choice. Olli is electric-powered and 3D-printed, reducing the vehicles footprint before and after it hits the road, Local Motors wrote in a release. The bus can even talk to riders. "Olli offers a smart, safe and sustainable transportation solution that is long overdue," John B. Rogers Jr., Local Motors CEO and co-founder, said.

It was big week for solar power as well. For starters, scientists developed a breakthrough photovoltaic cell that set a new world record for efficiency. Portugal made headlines by running on 100-percent renewable energy for more than four days. The Mistbox is a new device that uses solar energy to cut down on summer cooling costs. And scientists discovered a new form of spiralized light that flies in the face of everything quantum physics says about photons.