Uses veil

“Hey,” she said. “Does this spell stop radar?”
“Uh,” I said. I was already holding on to a veil and driving faster than was strictly safe, and my attention can only split so many ways. “Not mine. Molly’s will stop almost everything, but I only bother with visible light becau—”
Murphy reached over while I was still talking and pushed down on my right knee, hard, pressing the accelerator flat again. “Faster.”
I gave her an annoyed look and then did it. The old engine gave a game growl and we gathered speed going down the on-ramp, rapidly reaching speeds that would preclude any chance of getting off with a warning.
I checked the rearview mirror in time to see our entourage come barreling onto the entry ramp behind us—
—just as my more-or-less-invisible car passed a pair of highway patrol vehicles poised on the side of the ramp, watching for speeders to come sailing under the bridge.
I had a chance to see both highway patrol officers come to attention behind the wheel, their eyes on their radar-gun readouts, then switching to the apparently empty road—and both men locked eyes on our pursuers, the only apparent visible source of the readings on their instruments.
I flashed by them and just had time to see their bubs coming on before they vanished into the obscurement generated by my veil.
“Oh,” I said to Murphy in admiration. “That’s just mean.”
“Right?” she asked me, smiling. She patted my leg and said, “Good job following directions.”
Which was another way to say, Thank you for trusting me.


Peace Talks Chapter 23, Page 222-223