I've always wondered about this, because i've been in quite a few cities where the regular rules of parking and road use seem to be waived for churches and other religious properties.
Anyone who has tried to get parking in San Francisco knows what a nightmare it can be, and yet on a few occasions when my wife and i have been in the city (we visit regularly) i've seen churchgoers parked in the middle lane of the road (the turning lane). My wife, who is from SF, says it's quite common practice. I'm not sure if there's a city ordinance allowing them to park there during services, or if the authorities simply turn a blind eye because they're going to church.
Similarly, in New York a few weeks ago, i noticed that most churches and synagogues in Manhattan have large swaths of "no parking" area out the front, on streets where parking is allowed everywhere else. I don't think we should make these sorts of exceptions to our civic codes for religious institutions.