In other news, solar energy is lighting up the world at large as India gears up to power all of its cellphone towers with photovoltaic cells, saving 5 million tons of CO2 and $1.4 billion annually. And speaking of silicon cells, the National Renewable Energy Laboratory recently unveiled its latest creation: a super robot capable of assembling an entire photovoltaic cell in 35 minutes flat. We also looked at a prototype of a prismatic solar balloon that uses a colorful new type of solar cell to soak up the sun's energy from high in the sky.
Finally, this week we took an in-depth look at the Ingocar, a hydraulic hybrid drive vehicle so light and efficient that it promises a mileage of 170MPG. This next-gen vehicle uses hydraulic fluid under pressure to accelerate, brake, and eliminate the need for a heavy mechanical drive train, making it 50% lighter than hybrid electric vehicles. And if you've ever experienced the maddening anxiety of circling for a parking spot on crammed city streets, relax - there's an app for that!