Based on the models, this will be a non-event in Texas UNLESS some part of totality looks like it's going to open up AND THEN there will be a crush of a million, maybe up to 3 million people trying to get in to it. If that "hole" is not accessible due to distance from popcenters and 2-lane pavement, many will try and fail and the backups from the 'epicenter' will radiate towards pop centers in every direction. In addition, if there is only 1 or 2 'holes' likely to develop, forget online navigation. If you don't already have a copy, and if you plan on going full tactical at 3am monday morning, one of these is mission critical:
https://www.amazon.com/s?k=benchmark+texas+atlas&crid=3G8GPAUVAP01P&sprefix=benchmark+texas+atlas%2Caps%2C172&ref=nb_sb_noss_1
If you are going full tac, study the fuck out of the target zone: know where the paved roads are, where they start, where they end, and be prepared to take a caliche road here and there.
It's the exit that is critical - a single stop sign might take an hour to clear. It's impossible to game scenarios but there are certain roads in certain areas that provide excellent horizontal or vertical reach of about 25-30 miles, which is all you should expect at 9am once you've set your target.
I've laid out several strategies upthread, and again historically the Bracketville - to - Radar Base road is statistically the best location in Texas, and the 3 Clarksville holes we've seen are just very odd and might be worth a saving throw.
More as we get closer.....