She slid her hand over his right knee until it rested just on the inside of his leg and began gently caressing him through his tux pants. He turned his attention away from the road for just a second to smile at his wife.
"Have I told you that you look incredibly beautiful tonight?"
"You have," she purred, "but I love hearing it. Tell me more, handsome." He chuckled, and she trailed her fingers a little higher on the inside of his thigh.
"You are stunning. Gorgeous." Her hand crept a little further up. She was at mid-thigh now. "An absolute vision of loveliness." Another inch. He glanced over and raised his eyebrow questioningly. "Very sexy." Her next move grazed the head of his cock, which had begun to lengthen down his right thigh when she first touched his knee. He drew a quick breath, and said, "And very, very distracting."
"I see." She brushed her fingers over the head again, gently moving the silk of his boxers underneath his pants, and was rewarded with a strong twitch, and a quiet growl.
"You realize I'm driving, right?" Another quick glance at her revealed that her satiny dress showed her erect nipples. He let out a little groan.
"I do." She gently scraped over the ridge of his cock with her nails. The twitch visibly moved his pants. "I'm finding it quite arousing to watch you fight to keep focus while I'm touching you." Her voice was still the sultry purr that made his heart beat faster even when she wasn't touching him.
She held the tips of her thumb and index finger together and placed it at the head of his cock and pushed down, parting her fingers to slide them down either side of what was now his fully erect shaft, and then dragged them back up again. His groan was louder, and deeper.
"Is this why you insisted on the silk boxers?"
"Perhaps." She now slid her hand down between his legs to scrape her nails along his balls. He moved his left leg further towards the car door with a low moan, making room for her to reach lower. Her hand moved back down to cup him, gently fondling the twin bulges within, tugging on the loose skin, and shifting the fabric so that the silk was dragged along his balls and the base of his shaft.
"Oh..." it was a groan, and she checked his face to make sure his eyes were, in fact, still on the road. "Hon, you're killing me."