Private Road: No Trespassing (1988)

Mitzi Kapture plays Helen, as an affianced heiress who becomes romantically involved with stock car racer, Brad Carlton, with whom she got into an auto accident. Brad helps her company win a multi-million dollar government military contract. Predictably, Helen's fiancée Ken resents it when attention is focused on Brad. Brad becomes a victim of sabotage and strange accidents, and realizes someone wants to stop him cold, dead cold.