I take back what I said about the accuracy of the google earth ruler.

Check out the coordinates to this airport:

38°59'53.97"N 119° 9'37.81"W

There's two airplanes. One has a wingspan of 32' (which is the wingspan of the Super Decathalon that Mr. Fossett was flying) and another one of about 36-37' which is the wingspan of a Cessna 172.