/sci/ - Science & Math

Hello /sci/ I don't come here often but I wonder if you can help me.

So when I'm in my car and a fly gets in, the fly is able to buzz around in the air as normal, but surely if I'm driving a car at 70MPH, the second the fly leaves whatever surface its on, it should fly straight backwards?

If it isn't actually connected to the car then why does it travel along with us? The car is AROUND the fly, and moving, the fly isn't part of the car like I am.

So why does this happen? How does the fly move along in the same space as the car despite only moving in the direction/speed its flying?