The artificial leaf, a very interesting way to (partially) solve the energy problem of the world. I just saw a program on the BBC World channel called Horizons. I think that people who understand physics should see this. Can this be used in the automotive industry? Here is the link: http://www.bbc.com/specialfeatures/horizonsbusiness/
Incident sunlight on a car is too diffuse a source to provide useful range while driving. The best that even very efficient solar panels could offer an EV is temperature control while parked, but even then only if you're parked in full sunlight, preferably at low latitudes or angled just so. The capital cost of any solar collector is best deployed on stationary structures that are always in sunlight.