=GTAman wrote A mile is 5,450 .and can you imagine 20 miles's... A mile is not 5,450ft..A mile is 5,200FT=62,400 inches...And I CAN IMAGINE 20 MILE'S. if it works. as it saids in the book. BUt other people might comment on this because to them its skeptical anything would be skeptical if you never see or used or build the devise you never seen before. but that does not mean it can't work. ANYBODY can make a comment and think they know it all, with out the real facts. fact=something that exists or occurs, a piece of informtion about such a fact.. The quality of being actual.... God Bess.