As a transportation engineer myself, I can't appreciate enough of the amazing US interstate highways! From the planning, research, design, development to management, every step is exemplary. This is the backbone of US economy. A road trip is as memorable as the riding experience! This picture was taken beside a rest area in Idaho on the I-15 northbound on our way to Glacier National Park. A storm was raging while the sunlight was trying hard to pierce thick clouds. Lightning was striking on the mountains afar! And then came the 'transformers' to take some rest!! Please swipe right to see more details and the full image.