It depends on how fast you're going. Assuming you're driving at a constant speed, you can determine the time (in hours) by dividing 16 by your speed (in miles per hour).
16 hours.
24 mins
16 hours 10 minutes.
36.21
16 hours 46 minutes.
16 hours.
4 hours 16 minutes.
2 hours 16 minutes.
16 hours, if you do it non-stop
5 hours 16 minutes.
At 60 mph your speed is one mile a minute, so the answer has to be 16 minutes.
3 hours 16 minutes