[fouc]

when I hear "captcha" I think of mostly black text on white background. The text is made hard to read by distorting the font, and possibly drawing a line through it.

So I find your analogy of "literally looks like a captcha" to be confusing.

[drc500free]

To me that's what it looks like (minus the text distortion). The color of the roads is nearly identical to the color of the text, so it's text with a bunch of random lines going through it so that I can't easily read it. From other people's reactions, I suspect color blindness at play here.

Are the roads and text very different colors to you, so that you can easily read the text?