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
4 hours 16 minutes.
16 hours 46 minutes.
16 hours.
16 hours, if you do it non-stop
2 hours 16 minutes.
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