There does not seem to be a book called "Around The World In Seventy Days" but there is a website called http://www.around-the-world-in-70-days.com/ and the guy who made that site has written a book, but it's called "Beyond Freedom Fries". Also it seems to be about his trips to America. He has traveled around the world, but it took 3 years, not 70 days.
There are also a few other websites with the title Around The World In Seventy Days, one of which looks to be about a tour that was taken by a group to travel the world by plane in 70 days. You can find all of them by doing a Google search for "Around The World In Seventy Days".
I hope this has been helpful in helping you find the source you were looking for. I'm sorry that I didn't catch the name of the guy from Beyond Freedom Fries, but it is on the front page of his website.
Was the book "Around the World in Seventy-Two Days"? Is so, the author was Nellie Bly, who was inspired by Jules Verne's novel "Around the World in 80 Days".