"Fuzzy" and the fuzz" are antiquated American slang terms for police which originated in the 1920' or 30's and still used in some Southern towns today.
Today I experimented and applied the Orton Effect for the first time to achieve this fuzzy glow to a vehicle. We look back in time with a perspective often referred to as a "hazy recollection". Thus, the purposeful blurring of the object in the photo is fitting to the nostalgia of the time.
Evan Morris, the Word Detective, suggests the word "arose as a term of contempt for police based on the use of ‘fuzz’ or ‘fuzzy’ in other items of derogatory criminal slang of the period. To be ‘fuzzy’ was to be unmanly, incompetent and soft. How better to insult the police, after all, than to mock them as ineffectual?"
That explanation seems as good as any, and better than most. *