On June 29，2010 (local time in Finland), a Finnish young man named Jukka Mutanen, after a 29 days’ journey, successfully travelled across his country with a length of 1,000 km by driving a SWE17B excavator,creating a new Guinness record-the individual drivinga excavator to travel the longest journey without trouble.

The point of this issue is:

the undercarriage rollers are totally from Chuandi