I have an expense from ATS consolidated LLC and have no idea where its from?

I had that charge and it corresponded to a line item called "PlatePass", so I assume it is an elctronic toll. Mine was from a rental car.

I called AmEx to find out and possibly dispute the charge and the CC agent informed me it was PlatePass. That phrase didn't come across on the charge so I was really confused. Plus, it showed up on my account two weeks after I incurred the expense, further leading to the confusion. My Hertz rental when I traveled in DC and DE had one of those boxes up by the mirror so that you could drive through the Toll boothes without waiting. The expense just shows up about two weeks later.