It takes maybe 4 hrs. Or so it goes by pretty fast.
It takes a fat seven hours to get from Austin tx to Stillwater, Ok and OKC is 54 minutes SW of Stillwater. So based on that analysis...probably six and one half hours total.
Yes, but really it would depend upon many things such as, speed limits, and whether or not you follow them. (= And of course regular stops to get a snack, something to drink, use the bathroom, etc etc.