your time to react is an issue with crossed legs.
I don't believe that it is. The only time I would ever do this is with cruise control on empty highway (the only time I use CC...). And even then, I'm a drummer... I have faster feet than the average bear.

What should scare you are people texting while weaving through traffic in their Eclipse. Saw that last night. Woman may as well have been driving with her eyes closed.