thanks so much for the timeline
Sept 1 - arrived in FL, so he must have left Wyoming Aug 26 or very late Aug 25.
re: 2700 miles - narrowing the time:
Gas stops, fast food, and sleep, with one stop for necessities and two stops for toilet would equal about 500 miles a day hard driving. 2700 miles/500-day = 5.4 days
Wyoming to Florida - 2,100 miles/500-day = 4.2 days on Interstate 70 straightest shot or drop down to the coast and go I-10 across
3 routes: bing search distance wyoming to florida
https://www.bing.com/maps?q=distance+wyoming+to+florida&cvid=ba4e466066e449a09a158ab37c702876&aqs=edge..69i57j0l2.8072j0j1&pglt=299&FORM=ANNTA1&PC=ACTS
thanks so much for the timeline