Good Sam RV trip planner

I'm a life member but haven't really used the planner....
Today I entered our trip from Meriden Ct to Palmetto Fl.
Wow, something is amiss here.
1- The trip time and miles indicated that we'd have to go 80mph. IE: 1289 miles in 16.05hrs.
2- It routed us to a cars only lane.

Needless to say I decided to contact you..
Please advise.
Tim #44738987