Conversation so far:
when did Alan start racing?
Kulwicki began his racing career as a 13-year-old kart racer.
who made the karts for him?
Kulwicki asked his father for advice, he typically ended up doing most of the work himself.
"I showed him how", Gerry Kulwicki said.
when did Alan start racing cars?
Kulwicki moved from dirt tracks to paved tracks in 1977.
did he have any sponsors?
CANNOTANSWER.

Question: what make of cars did he drive?
Self-contained rewrite: What make of cars did Alan Kulwicki drive?