You guys chasing Ag equipment with your quads doing videos have it real easy. Your stuff is big and slow and goes in straight lines measured in thousands of feet. I've been chasing my coworkers on commercial ZTR mowers this week and it's a challenge. Small targets moving 12 plus MPH in normally straight lines measured in 100s or less feet. Sure keeps you on your toes when there are trees and buildings around.

This Video is the same site as the first picture. In the second, my faithful sidekick was doing every bit of 14 MPH.