The streets of San Francisco through the cable car

If you look at this photograph in full view by clicking on it, you will see some idea of the ups and highs of the streets of the San Francisco. San Francisco is a strange place, going up and down. If you look closely at the wheels of the cars, you will see that all the wheels are turned inwards. Due to the sloping nature of the roads, all parked cars have to have their wheels turned inwards so that even if they start to move down for some reason, they will turn into the curb.