in several screenshots in this forum i have noticed people have cars that pull the airplane from the terminal close to the runway for large planes. how do you do this?

If you're talking about pushback, you should have tugs at most gates if your Scenery Complexity is high enough. Shift-P will cause the tug to engage the nosewheel and push you back from the gate until you hit Shift-P again.If it's something else you're talking about, then it's probably part of a 3rd party airport.Hope that helps.Jim