we're traveling with our puppy from nyc to san fran may 7 - may 14, going via rte. 80 would love any advice - ie: good stops (for parks, puppy play, scenic nature etc), what is generally halfway point? one person will be driving first three days, someone else joining to drive next three days, and then we'll arrive below san fran on 7th day. where's best place to switch drivers and have them fly in and out of? cheyenne? any good "local" food places, good pet friendly lodging? any help would be appreciated!!!!