A Rug on the Rails

My wheels were humming as I rolled out of the corridor, ready for full speed ahead! Right in my way lay the thick woven edge of a large blue floor rug, rising up like a mountain ridge. A proper engine never turns back! I gathered all my steam, gritted my teeth, and charged straight at the slope. Chuff, bump, whir! My front wheels slipped on the woolly fibers for a second, but with one mighty heave forward, my front buffers popped right over the crest. I made it onto the high plateau right on schedule!