I drive New Stanton to Breezewood fairly regularly. US 30 averages only 20 minutes more. Just make sure you drive a reasonable speed and that your brakes are in good shape.
As I mentioned before, I drive from Maryland to Michigan a handful of times per year. I’ve always wanted to try the run on the Lincoln Highway (30)but for 500 miles, it’s significantly longer and I never have the time.
The last time I went was to help my daughter move two weekends ago. It was truly an in/out trip. Most times I go, I end up sleeping in the car at least one night.