DCist thought that when we saw this truck speeding down a Philadelphia-area freeway this past weekend, it was just a highly motivated anti-gay marriage activist from the City of Brotherly Love driving around advertising a defense of marriage rally on the National Mall.

But we see that Ambivalent Images snapped a photo of the same truck earlier this month near the White House. If you read the fine print on the driving advertisement, there is a “Mayday for Marriage” rally on the National Mall on Friday from noon to 3 p.m.

Certainly, this activist/driver gets around the region. If you’re curious, there is more detailed info on the rally at the Mayday’s official website.

On Monday, a cross-country caravan of activists fighting the push to add an anti-gay marriage amendment to the Constitution arrived at the Capitol.