Ahead, on the left, a shimmer of light catches the eye. At first glance, it looks like a trick of the sun on the horizon, but as they near, the glimmer resolves into the faint outline of a tall, intricate archway - CERTAINLY out of place on the mundane roadside. The arch is formed of twisting vines and twinkling lights, only visible to Fae eyes!
To mortals, it likely appears as nothing more than an overgrown patch of brush, barely worth a second glance.
The siren grows louder, the patrol car closing in.