Pedzisa mutsara unotevera: 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. Akanga apinda uye aidzidzira nokuda kwe
1986 Indianapolis 500 mukunyora kwaMike Curb, asi haana kuita kuedza kukodzera. Akapedza ari 26 uye 22 mumapoinzi mumwaka wake miviri, zvichiteerana. Pashure paikoko akachinjira ngwariro yake kumakwikwi emotokari emitambo.