1 9 9 2 ▁season , ▁sports ▁car ▁racing ▁throughout ▁the ▁world ▁was ▁greatly ▁alter ed . ▁Both ▁the ▁World ▁Sport scar ▁Championship ▁and ▁All ▁Japan ▁Sports ▁Pro totype ▁Championship ▁would ▁be ▁cancel led , ▁leaving ▁Maz da ' s ▁expensive ▁M X R - 0 1 ▁with ▁now here ▁to ▁race . ▁At ▁the ▁same ▁time , ▁I MS A ▁announced ▁plans ▁to ▁abandon ▁the ▁G TP ▁category ▁after ▁the ▁ 1 9 9 3 ▁season , ▁turning ▁instead ▁to ▁a ▁new ▁category ▁of ▁open - cock pit ▁pro tot ypes . ▁This ▁meant ▁that ▁Maz da ▁would ▁only ▁have ▁one ▁more ▁year ▁to ▁be ▁able ▁to ▁use ▁the ▁R X - 7 9 2 P ▁in ▁North ▁America ▁only ▁before ▁they ▁would ▁have ▁to ▁construct ▁an ▁all - new ▁car . ▁ ▁The ▁R X - 7 9 2 P ▁effort ▁was ▁full ▁steam ▁ahead ▁for ▁ 1 9 9 3 ▁and ▁the ▁group ▁began ▁to ▁look ▁towards ▁improvements ▁that ▁could ▁be ▁made ▁the ▁ch ass is . ▁ ▁On ▁I MS A ’ s ▁sl iding ▁weight ▁vs . ▁engine ▁disp lacement ▁scale , ▁the ▁Maz da ▁ 4 - rot or ▁came ▁in ▁at ▁ ▁and ▁many ▁teams ▁had ▁cause ▁for ▁concern ▁about ▁this , ▁thinking ▁that ▁the ▁Maz da ▁engine ▁had ▁been ▁gift ed ▁a ▁power - to - weight ▁ratio ▁advantage . ▁While ▁the ▁R X - 7 9 2 P ▁showed ▁occas ional ▁turns ▁of ▁speed , ▁the ▁reality ▁was ▁that ▁the ▁engine ▁simply ▁was ▁giving