Is being alone with a foreign driver when going to school considered an unlawful seclusion (khalwa), despite adhering to the hijab and not speaking to the driver, who is over sixty years old and has daughters the same age as the student?

A woman riding alone with a driver is considered an unlawful seclusion (khalwa muharramah), even if the driver is old, because Satan flows through the son of Adam like blood. However, if the woman is accompanied by another trustworthy woman, then there is no harm in her riding with the driver.