The opening of Mt. Palomar observatory, featuring testing of the 200 inch mirror. Also, the Davis 3-Wheeler and other experimental cars.The opening of Mt. Palomar observatory, featuring testing of the 200 inch mirror. Also, the Davis 3-Wheeler and other experimental cars.The opening of Mt. Palomar observatory, featuring testing of the 200 inch mirror. Also, the Davis 3-Wheeler and other experimental cars.