:Also note that khardungla was already a pass that was part of the silk route for centuries, but it was only in 76 that a road was built and opened to public in 1988. so it suggests that not all passes are considered as roads, though they might be so flat u could drive vehicles. i think the confusion might lie in what is being termed as a "road". motor vehicles can and have been driven to more than 6000 metres as u said, but the record is not about endurance driving, or climbing over the hill with specialised vehicles or drivers but about the "highest road" which any averagely skilled driver on almost any motor vehicle can climb. the khardungla has been driven on by a myriad of vehicles from the mundane to the heavy vehicles.