Kammala wannan jumla: A 1985 da 1986, Lammers ya yi 10 CART World Series farawa don ƙungiyoyi huɗu daban-daban. Mafi kyawunsa shi ne na biyar a Laguna Seca Raceway a 1985 don Forsythe Racing. An shigar da shi kuma ya yi aiki don
1986 Indianapolis 500 a cikin shigarwar Mike Curb, amma bai yi yunƙurin cancanta ba. Ya gama 26th da 22nd a maki a cikin yanayi biyu, bi da bi. Bayan haka sai ya mai da hankalinsa ga tseren motar motsa jiki.