One of the hallmarks of a road trip is the humble truck stop. If you're in Iowa, you can visit the world's largest truck stop: Iowa 80. Situated just south of Dubuque, Iowa's oldest and most ...

The world's biggest truck costs about $3 million and can carry and dump a 400-ton load. Loaded, it can weigh 624 tons. The diesel-to-electric engine system has more in common with a railroad train ...