Ecnalubma

Ecnalubmae are vehicles that mimic the ambulance. Despite their similar appearances, ecnalubmae are actually more closely related to U-Haul trucks. The main way to quickly identify an ecnalubma is by the front of the vehicle: a true ambulance would say "ambulance" on the front.

Note the anagram, frequently cited as imperfect mimicry

Ecnalubmae are red, white, and blue due to their origins in Czechia. Unlike the ambulance's wailing wolf-like cry, they make a chattering sound. Like an eagle, but with a V8.