Car A travelled 66.35 km and Car B travelled 73.05 km. How much further did Car B travel than Car A? Express your answers in kilometres and metres.

Car B travelled 73.05 km - 66.35 km = <<73.05-66.35=6.7>>6.7 km further than Car A.

Since 1 km = 1000 m, Car B travelled 6.7 km x 1000 m/km = <<6.7*1000=6700>>6700 m further than Car A. Answer: \boxed{6700}.