A woman in a Smart car drives past a tipped over Smart car on the corner of Prospect and Oso streets in San Francisco, Monday, April 7, 2014. Police in San Francisco are investigating why four Smart cars were flipped over during an apparent early morning vandalism spree. Officer Gordon Shyy, a police spokesman, says the first car was found flipped on its roof and a second was spotted on its side around 1 a.m. Monday in the Bernal Heights neighborhood. (AP Photo/Jeff Chiu), APTOPIX