Doublestack containers have revolutionized the railroad industry. You can see them everywhere across the nation. Yet one of America's most famous railroad landmarks has been off limits to doublestacks due to numerous tunnels with restricted clearances. Now, after millions of dollars and months of hard work, the famous Tehachapi Loop has doublestacks traveling around it in spectacular style! Pentrex visited Tehachapi to show the results of the work done in the tunnels and trackside to prepare for the doublestacks. A season of record rainfall in California left hillsides green and gorgeous, and every shot in this video is a beauty! You'll see the latest high-powered, high-tech locomotives growling up the grades and pulling their mile-long trains around the Loop. This video has it all: spectacular shots of the newest locomotives, nonstop train action, incredible scenery, and now doublestacks for the first time!