A car (or automobile) is a wheeled motor vehicle used for transportation. Most definitions of car say they run primarily on roads, seat one to eight people, have four tires, and mainly transport people rather than goods.
She must pray in standing position where ever she can and not in sitting position when she is able to stand. If she prays in sitting position while she is able to stand, her prayer will be invalid.
If you take the money from a Non Muslim bank and use it in lawful way, then it is allowed.
If you take the money from a Muslim bank, then you must have with them an agreement within the frame of Islamic rules of business.
If there is a chance of getting involved in haraam acts, then it's haraam to be alone in these places.