my father---- a bus to his office until the workers have had

从"until...next week"可以知道父亲的车坏了,要下星期才能被修好,那么他这两天上班怎么办呢——乘公交车,乘公交车是他唯一的办法,是一种打算,一种即将采取的措施.所以用is taking 相当于is taking to
整个句子的意思是：我爸爸这两天打算乘公交车上班,直到下星期他的车被修车的工人们修好.