The former Vietnam helicopter pilot spent most of his career in sports cars, where he won two IMSA GTO championships (1989, ’91), six Trans-Am races and an IMSA GTP event at Riverside in the BFGoodrich Porsche 962. Halsmer is also a three-time GTO class winner at the Rolex 24 at DAYTONA, including a stunning third overall in 1983 in a Racing Beat Mazda RX-7. The Purdue University grad drove for Roush Racing from 1986-89, winning his six Trans-Am events, four GTO races and the 1989 GTO title. From 1990 through 1992, he drove for Mazda Motorsports, winning the 1991 GTO championship in an RX-7. Halsmer represented IMSA in the 1992 IROC series. From 1994 through 1997, he drove BMWs, winning four GT2 races and helping the team capture the 1996 manufacturer's title. Halsmer’s open wheel career included a Super Vee win, followed by 33 starts in CART over five seasons (1980, 1982-5), including two Indianapolis 500s. He scored three Top 5s, with a career-best 2nd at Cleveland in 1983.