Kind of car San Francisco is famous for

CABLE

Think of the steep hills and the unique tracks that help these historic vehicles climb them.

San Francisco is well-known for its iconic cable cars, which are a historic part of the city’s transportation system. The clue hints at this by asking for a "kind of car," and the answer "CABLE" refers directly to the cable cars that run on tracks using underground cables. It’s a straightforward reference to a famous local landmark.