Avreimi
I don’t know where it says these words “al yidaber sicha im haisha – don’t talk to a lady” but the reason is cuz regular chit chat can turn worse… I would imagine that giving a girl or lady a ride can fall into the issue of al yidaber sicha im haisha. There are always storys of a boy and girl on a date that started off with regular conversations and by the time they were getting married they wernt shomer nigiya anymore and I’m sure that they didn’t think it would be an issue for them