With Aconcagua behind him Crane is eyeing oilier plunges, including the ultimate downhill drop, from the summit of Mount Everest to the sea. Geography and altitude pose a problem, as all of Nepal and a hefty chunk of India separate 29,028-foot Everest from the Bay of Bengal. But no matter. For now, the challenge—impossible as it sounds—has been laid down. "A descent without qualification: bicycle, skis, a pogo stick, it doesn't matter," says Crane. "It's just purely who has done the greatest downhill in 24 hours." He raises an eyebrow. "I believe, at the moment, that would be me."