Various roads can cause swaying. California drags lines into concrete highways to reduce standing water, Texas has wheel trenches from trucks, all causing that strange swaying back/forth.
Another potential issue is your suspension. Given the age of your vehicle, it could be slack in your front steering assembly.
If this happens again note the location (highway) and see if you can keep replicating. It's good information for your repair shop.
Another potential issue is your suspension. Given the age of your vehicle, it could be slack in your front steering assembly.
If this happens again note the location (highway) and see if you can keep replicating. It's good information for your repair shop.