Is it permissible for a woman to travel on the basis that the driver’s wife is her mahram?

Question:
Some women travel more than one hundred kilometers for work, and they say that the driver’s wife is a mahram for them. Is this permissible, given that the mahram here is the driver’s wife?

Answer:
A woman is not a mahram for another woman. Her mahram is a relative who is forbidden to her by lineage or breastfeeding, such as her brother, her paternal uncle, or her maternal uncle by lineage, or her brother, her son, or her father by breastfeeding. This is her mahram: one who is forbidden to her by lineage or by a permissible cause.
The mahram must also be an adult of sound mind. A boy is not suitable, and one who is not of sound mind is not suitable as a mahram. This work is not an excuse. If she does not have a mahram, she does not go to work; she stays in her home. She stays in her home. The women did not study abroad. All the women of our fathers and grandfathers, and all the generations, did not go and travel for the sake of seeking money. They stayed in their homes, and their husbands were the ones required to provide for them. The husband is the one who travels, the one who seeks provision, and the one who is responsible, while she is in the home. This is the default. But these people have opposed the fitrah (the innate natural disposition). They have opposed the fitrah, and the love of money is what drove them to these matters. They do not take a lesson from the disasters that are now happening on the roads. How many accidents have befallen women on the roads, and how many women have perished, been injured, and had their bodies disfigured, yet they do not take a lesson. There is no power and no strength except with Allah. Money blinds them and deafens them.