 Shelly akaita nhangemutange yake yokumhanyisa motokari muna January 1955, achipinda muMorgan mukirasi yeMotokari Dzemitambo yeNew Zealand Grand Prix. Shelly akakwanisa asi haana kutanga mujaho wacho. Shelly akakunda mujaho mukuru wokutanga waakakwikwidza paTeretonga muna 1958 achityaira Cooper uye akaenderera mberi kuva mutyairi anotungamirira muAustralia neNew Zealand asati atamira kumakwikwi muEurope muna 1962. Akanga achityaira zvikuru John Dalton, kazhinji mumitambo isiri yemakwikwi nekubudirira kwakapfava, wechishanu muLombank Trophy uye wechitatu muLavant Cup ari iwo akakosha emwaka wake. Akapinda mu1962 Le Mans munaJune naColin Chapman kuti ave mutyairi pamwe naLes Leston neLotus 23, asi murongi wemakwikwi, ACO, akaramba kupinda muLotus Le Mans debacle. Akapindawo mumitambo mitatu yeFormula One World Championship, kuAintree, kwaakaenda pamudyandigere nekutadza kwe cylinder head gasket, uye ku Nürburgring neMonza, kwaakakundikana kukwanisa nguva imwe neimwe. Pakupera kwemwaka iye akadzokera kuNew Zealand kwaakaramba achimhanya muna 1963 na1964 mushure maizvozvo akasiya basa, kunyangwe aigona kukwikwidza nguva nenguva kubva ipapo. 