It'd be on my 1200 Sportster, Rubber Mount Engine and 60 MPG. It's pretty well modified and runs fast (For A Harley) to well over 100 Mph. I'd do 100 miles or so a day and stop at free scenic sites. There's a lot to see in the USA. Then Came Bronson Style.
In that case I'd want the 'Billy Bike' from Easy Rider, lots of money a good gps.