8、Car A and Car B start from A and B respectively at the same time, heading towards each other, and meet after 4 hours. Car A then takes another 3 hours to reach B. If Car A travels 20 kilometers more per hour than Car B, the distance between A and B is ( ) kilometers.
【Analysis】Travel problem: meeting. Since the speed of car A - the speed of car B = 20 km/h, and they meet after 4 hours, the distance difference between the two cars when they meet is $20 \times 4=80$ km.
If both cars have been driving for 3 hours, then car A has traveled 60 km more than car B.
And if car B drives for 1 more hour, it will have traveled the same distance as car A in 3 hours,
so the speed of car B is 60 km/h, and the speed of car A is 80 km/h.
Therefore, the distance between A and B is $(60+80) \times 4=560$ km.