Lost in the vast Scorpion Desert of Venus, he needed all the courage a man could own—and every bit of credit he could raise! The sandcar moved smoothly over the rolling dunes, its six fat wheels rising and falling like the ponderous rumps of tandem elephants. The hidden sun beat down from a dead-white sky, pouring heat into the canvas top, reflecting heat back from the parched sand. "Stay awake," Morrison told himself, pulling the sandcar back to its compass course. It was his twenty-first day o