Maxi-car is the brand name of hubs produced at least at some point by Rousson et Chamoux S.A., based in Feurs, France.  On the later, definitive, versions of the hub the distinctive red label appears with italicized logo as "Maxi-car", with only the M capitalized.  On older hubs and in brochures, the name appears in capital letters with hyphen: MAXI-CAR.  Sometimes the name is seen as Maxi-C.A.R.  The name is said to have originated from the design collaboration of hub makers Maxi, with Charles-Albert Ripet, of Lyon.

Helpful links:

http://www.blackbirdsf.org/maxicar/

www.yellowjersey.org/maxtek.html