Rubuta ci gaba ga wannan sakin layi - Bayan nasarar Mazda ta lashe 1991 24 Hours na Le Mans
, canji a cikin dokokin injin da FIA ta tilasta Mazda ta watsar da R26B 4-rotor a Gasar Wasanni ta Duniya. Koyaya, ƙa'idodin IMSA sun ci gaba da ba da izinin amfani da juyawa, wanda ya sa Mazda ta kawo R26B zuwa Arewacin Amurka, tare da gyare-gyare don dacewa da gajerun tsere da da'irori.