I'm commandeering this vehicle for police business

A few weeks ago I had a conversation with one of my friends about whether real-life police have the authority to commandeer your vehicle like they do in the movies. I wrote myself a note to research it on Google, but forgot until just now. I'm not surprised that Snopes has already covered this important issue.

In California, it seems to be legal. I don't have a car, so I don't have to worry about that for the time being, but check what else is on the books in my sunshiny state:

"If you're an adult and a law enforcement officer (with proper identification) requests your help in catching or arresting a suspect, re-capturing an escaped arrestee or prisoner, or preventing a crime, you are required by law to oblige or face a fine ranging from $50 to $1,000."