This Is the One Reason You Can’t Drive Straight From North America to South America

Stretching from Alaska to the pencil tip of Argentina, the 25,000-mile-long Pan-American Highway holds the record for the world's longest driveable road. Unfortunately, it comes to an abrupt end at what’s called the Darien Gap, preventing you from being able to drive from North America to South America. The gap stretches from the north to the south coast of Panama — from the Atlantic to the Pacific. It's 100 miles long, and there's no way round it, except by sea. Every so often, the dream of completing the Pan-American Highway is resurrected. The last push came a decade ago, but opponents said the road would pose a threat to indigenous cultures, accelerate deforestation, and allow the spread of disease, which the Gap has so far effectively prevented from spreading to North America.