Nyora kupfuurira kweiyi ndima - Muna 1985 na1986, Lammers akaita 10 CART World Series inotanga zvikwata zvina zvakasiyana. Kuguma kwake kwakanaka kwakanga kuri kwechishanu paLaguna Seca Raceway muna 1985 yeForsythe Racing. Akanyoresa uye akadzidzira nokuda kwe1986 Indianapolis 500
mukukwikwidza kwaMike Curb, asi haana kuedza kupinda mumakwikwi. Akapedza ari 26 uye 22 mumapoinzi mumwaka wake miviri, zvichiteerana. Pashure paikoko akachinjira ngwariro yake kumakwikwi emotokari emitambo.