http://youtu.be/wf_2E2IPk1M
Solar Ship is creating craft that can carry heavy loads long distances with a tiny carbon footprint. Filled with helium, they soak up rays from the sun to provide the energy for forward motion and fulfill its original design challenge – carry 1,000 kilograms (2,205 lbs) of payload 1,000 kilometers (621.4 miles).
The aircraft are designed to service areas with no roads, take off and land in a short distance, have solar panels on the top, and have a very low carbon footprint.