If I'm driving long distance on a road-trip, (approx. 400 miles, leaving house at 3am, arriving at approximately 9am) am I required to stop the car, get out, and daven Shacharit at or before sunrise? ...
I once heard of a concept of saying tefillas Haderech in שמע קולינו during shemonah esrei by Shacharis of that day. Has anyone here heard of it, and if so, what's it about?