Buuxi weedha soo socota: A2 (oo loo yaqaan A3 ilaha qaarkood), oo ay naqshadeeyeen Merzario iyo Simon Hadfield oo ku saleysan A1 kii ugu horreeyay, ayaa diyaar u ahaa wareegyada Yurub ee xilli ciyaareedkii 1979 oo leh isku mid ah mashiinka iyo isku-darka gearbox, waxaana loo beddelay gaari 'baal' ah oo saameyn dhulka ku leh. Hal tusaale oo kaliya ayaa la dhisay. A2 markii ugu horreysay waxay garoonka ku qaadatay 1979 United States Grand Prix West oo ay gacanta ku hayaan Arturo Merzario. Merzario ayaa ku haboonaaday baabuurka tartanka laakiin ka dib markii uu fashilmay ganaaxii hore wuxuu ku qasbanaaday inuu tartanka ku bilaabo A1B. Baabuurku wuxuu si rasmi ah ugu soo baxay 1979 Spanish Grand Prix, halkaas oo Merzario uu dhigay waqtigii 26aad inta lagu guda jiray isreebreebka oo uu ku guuldareystay inuu tartanka qabto. Tartankii xigay ee Belgium, Merzario ayaa shil galay intii lagu jiray isreebreebka wuxuuna ka jabay gacantiisa. Monaco Merzario wuxuu weydiistay Gianfranco Brancatelli inuu wado gaarigiisa, laakiin Brancatelli wuu ku guuldareystay inuu u qalmo. Merzario ayaa mar kale ku soo laabtay laamiga
Tartanka weyn ee Faransiiska. Wuxuu dhigay waqtigii 26-aad inta lagu guda jiray isreebreebka wuxuuna ka gaabsaday in ka badan laba ilbiriqsi isreebreebkii ugu dambeeyay. A2 ayaa markii ugu dambeysay ku tartamay tartanka Grand Prix ee Austria, ka dib markii Merzario uu waxyeelo u geystay A4 shil tababar.