Where I lived in San Jose (just off Camden) we didn't see many snails. But when I lived in San Diego, there were countless thousands of them in the landscaping along the highways. They lived under the ice plant that was often used as ground cover. When it was dry, they were invisible; but when it rained, all the snails became active. One day I turned onto the on ramp for I-8, and suddenly found myself spinning out of control for no apparent reason - I wasn't going that fast. When I recovered the spin, I pulled to the side of the road to wait for my heart to slow down, and walked back to see why I had lost traction. The ice plant had just been irrigated... and hundreds of snails were crossing the ramp.

It was like driving on grease.