here's the link to the index to Dr Rock's cross country ride(s). The Normandy Invasion is not as well documented as this trip is.
http://www.advrider.com/forums/showthread.php?t=344776
The plan was to ride as far as reasonable during a 2 week period, then stash the bike, fly home, and continue the next time a 2 week vacation was available. There have been 8 legs to the journey so far, including 3 legs to cross from New York to Reno, 2 legs up the pacific coast to Anchorage, 1 leg riding around Alaska and northwest Canada, 1 leg to Edmonton, and 1 leg south to Idaho.
The travellers camped often, but also stayed in motels. They packed very light, more like bicycle tourists.
The motorcycles used are Suzuki DRZ-400s, relatively inexpensive dual sport models. No autobahn-burning megabuck models here. Typical average speed is below 40 mph.