If that's the case then the company must allow the employees to return ON COMPANY TIME to their place of employment to swap vehicles, then take their normal lunch in their personal vehicle, then return to their place of employment to swap vehicles a second time, and then back ON COMPANY TIME to the job site.
Of course these employees would observe all posted speed limits on those EXTRA trips.
If SCANA refuses the employees should contact their local police department/District Attorney - the discrimination against the Confederate flag is illegal under South Carolina statute 16-17-220 (Desecration or mutilation of United States, Confederate or State flags). It's iilegal in Georgia as well.