About Agassiz "Agassiz", the name is derived from the geographical area of where our trailers are built. Lake Agassiz covered the entire Winkler, Manitoba, Canada region in pre-historic days. Thus, the name "Agassiz". Standard Cargos Agassiz Trailers "...A trailer that would incorporate all of the needs that our customers asked for, and a trailer that would be built well enough to withstand our drastic Canadian climates..." Click here for more information on Agassiz Trailers. Auto Haulers Click here for more information on Auto Haulers.