Photo: photographer and date unknown, but likely after 1930. Red Car Trolley passing through Red Car Canyon. (Click on photo to enlarge.)
Picked a up a Google Alert today for a link in WSJ.com to a story in Modern Hiker, about the Corralitas Red Car Trail.
Photo: Diane Edwardson, June 23, 2007. Photo roughly matches location in above photo at Corralitas Drive. (Click on photo to enlarge.)
It may not be much of a trail, but it is well used within the neighborhood.