สนามแข่งรถ Laguna Seca Raceway และคลาส gtu มีความยาวเท่าใด?
What is the length of the Laguna Seca Raceway circuit with a class of gtu?
df = pd.DataFrame(columns=['length', 'circuit', 'class'])
df[(df['circuit'] == 'laguna seca raceway') & (df['class'] == 'gtu')].length.values