on a car\on the car\in the car\in a car,哪个搭配不正确,有何区别?

on a car\on the car\in the car\in a car,哪个搭配不正确,有何区别?
on a car\on the car\in the car\in a car,哪个搭配不正确,有何区别?

on a car\on the car\in the car\in a car,哪个搭配不正确,有何区别?
全都正确,看什么意思在什么场合用