Today is a good day of speed flying at the Oklahoma Speedfest. This has become an annual event of RC contesting. There is also a great display and demonstration of scale planes.
The SF Zoo is a great place. I loved my morning.
But SF has a bit of a homeless problem and they know how to spot a rental car. I had my stuff in the trunk and they broke in just to see what might be there.
I have started building my quad copter. It is a 3D quad copter design. It has GPS, altimeter, three way gyros, sonic ground detector, magnetic compus, camera relay and radio telemetry.