Some are audible, sounds like a magnified fingernail on a blackboard, while others are supersonic and produce sensations of panic and imminent death. Harmless and highly effective. The street was otherwise empty when I walked out to the car that was just pulling up to the curb. My head was throbbing with the supersonics that got past the plugs and I was more than happy to slip through the open door and relax while Angelina gunned the machine down the street.

"Everything go all right?" she asked, keeping her eyes on the road as she whirled around a corner on the outside wheels. Sirens began to sound in the distance.

"A piece of cake. Smooth as castor oil…"

"Your similes leave a lot to be desired."

"Sorry. A touch of indigestion this morning. But my coat is lined with more money than we could possibly need."

"How nice!" she laughed, and she meant it. That irresistible grin, the crinkled nose. I longed to nibble it, or at least kiss her, but settled for a comradely pat on the shoulder since she needed all her concentration for driving. I popped a stick of gum in my mouth that would remove the red tooth dye and began to peel off my disguise.

As I changed so did the car. Angelina turned into a side street, slowed and then found an even quieter street to drive along. There was no one in sight. She pressed the button.

My, but technology can do some interesting things. The license plate flipped over to reveal a different number, but that was too simple a trick to even discuss. Angelina flicked on the windshield wipers as a fine spray of catalytic fluid sprang out of jets on the front of the car. Wherever it touched the blue paint turned a bright red. Except for the top of the car which became transparent so that in a few moments we were sitting in a bubble top surveying the world around. A good deal of what appeared to be chrome plated metal dissolved and washed away altering the appearance and even the make of the car. As soon as this process was complete Angelina sedately turned a corner and started back in the direction from whence we had come. Her orange wig was locked away with my disguise and I held the wheel while she put on an immense pair of goggly sunglasses.