SELECT highest_scoring_team FROM table_20079931_4 WHERE circuit_location = "Ring Knutstorp" AND winning_team = "Polestar Racing"
Apa tim skor tertinggi di babak di Ring Knutstorp di mana balap Polestar adalah tim yang menang?
CREATE TABLE table_20079931_4 (highest_scoring_team VARCHAR, circuit_location VARCHAR, winning_team VARCHAR)