We don't have synonyms for panda cars yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are panda car.
(n) :
(UK, Ireland, law enforcement, informal) A police car; specifically (historical), one with a broad white stripe painted around its middle on a darker-coloured or, originally, black background.
(n) :
(UK, Ireland, law enforcement, informal) A police car; specifically (historical), one with a broad white stripe painted around its middle on a darker-coloured or, originally, black background.