I don't get how you guys think the ankle-to-knee thing is comfortable. 98% of the time that's extremely uncomfortable to me (but then, I guess I have pretty bony ankles.) The girly way of crossing legs is most comfy for me, but I heard the same thing as someone else about that causing varicose veins, so I'm trying to break the habit. It had nothing to do with modesty for me, just the most natural and comfortable way.
And Moonie, I drive sitting on my left foot sometimes, or with my knee tucked up under my elbow, by the window. Gotta keep the right foot free for emergency braking.