I just heard about a proposal to allow advertising on city-owned vehicles. Wow, a match made in heaven. Look at the existing colors ... Pepsi gets to advertise on police cars and Coke on fire engines.
Here's a side benefit: The police can use Pepsi cans as a weapon: Throw 'em at the perpetrator. Not enough water to douse the fire? Extinguish it with a Coke or two.