It's extremely onerous and difficult to own a car in San Francisco (parking situation, street cleaning, meters, lack of reserved and available parking spots) but a bunch of Ubers and Lyft drivers can drive all day in the city causing massive congestion with plenty of drivers who not only don't reside in the city, but aren't even from the Bay Area paying nothing to maintain the roads or congestion or pollution or the fact that they don't know the roads and drive recklessly to maximize the number of rides per hour.