When I drive en femme it is always on neighborhood streets with a speed limit of 25 mph. I stay off freeways because I really do not want to change a flat tire in a dress with head lights hitting me. On city streets I can just pull over and change out of my dress and heels without attracting attention. I know I do not cheat on light changes while en femme. I do have a tendency in guy mode to cheat on the last few moments of that yellow light. I don't hold the steering wheel differently. I have learned to drive in a flat or at least a wedge heel so I do not catch the spike of a narrow heel in the carpet or what's left of it after sixteen years.
I do get in and out of the car differently in femme mode. In guy mode I tend to stick my right foot in first and climb in. In femme mode I first sit on the seat, smoothing the dress over my butt, and then swivel my body into the driving position. Otherwise any dress with a large sweep will bunch up.
I do agree with Kelli. I observe more distracted driving by females. The latest incident was a young woman applying mascara while driving. She could have poked her eye out. It is so obvious when someone is trying to text or fool with their phones. I see more guys changing lanes too often and otherwise driving aggressively.
PS: I agree with Teresa. Usually the same people too.