When i was waiting for the bus,TOM came--his father's car

When I was waiting for the bus,Tom came by his father's car.
当我在等公交车的时候,汤姆坐着他爸爸的车来了.
再问： 为什么不可能是BY IN ，即when i was waiting for the bus .Tom came by in his father's car
再答： by表示乘坐的交通工具或者手段，所以我们经常说by car, by air/ plane, by bus, by bike等 而in则表示所处的范围，且这两个词在这种情况下绝对不能叠用，也就是说in his father's car不能做by的宾语。