My suggestion is to plan carefully, including backup plans to account for weather and whatever unusual traffic decisions are made (e.g. routes perpendicular to the eclipse path may have some lanes reversed to accommodate the throng).
When the last Great American Eclipse crossed the US (August 2017), we started the day in Charleston SC, because it is a wonderful vacation spot on its own, in case we were clouded out -- and indeed it was touch and go with respect to clouds in the morning, so we packed up the car (we didn't have our CI then) and drove inland on I-26 towards Columbia, where the weather looked much more favorable, and found a small town (St Matthews) with the benefits of suitable backroad options towards home. The drive along I-26 was eerie -- very little traffic, as I-26 was parallel to the path of totality, but with multiple police cars stationed at every exit.
I learned later that friends who viewed it from Columbia were lucky -- there were clouds all day but they parted in time for the critical moment.
The buildup to the moment of totality is not to be wasted -- best to be safely parked and enjoying the experience with others.