well that depends on how fast it is going. I'm going to start at 5 mph go by 5 until I get to 80 mph
5 mph= 7.5 miles
10 mph= 15 miles
15 mph= 22.5 miles
20 mph= 30 miles
25 mph= 37.5 miles
30 mph= 45 miles
35 mph= 52.5 miles
40 mph= 60 miles
45 mph= 67.5 miles
50 mph= 75 miles
55 mph= 82.5 miles
60 mph= 90 miles
65 mph= 97.5 miles
70 mph= 105 miles
75 mph= 112.5 miles
80 mph= 120 miles
