about an hour
15mi/65MPH = .23 hr = 13.9 minutes.
19.5 mins
3 hours 13 minutes.
4 hours 41.5 minutes.
4 hours 16 minutes.
It should take 3 hours at 65mph.
9 minutes 14 seconds.
6 hr 29 minutes.
1 hour 23 minutes.
9 hours 42.5 minutes.
roughly 6 hours and 40 minutes