Last Christmas I was driving from Utah to Mexico. While I was approaching San Diego at night I was overtaken by a large
Group of riders on bullet bikes. They spread out and slowed traffic across all lanes down to about 40 mph. Then two bikes lined up and roll-raced. Then two more. Then two more... this went on for a full 30 minutes.
I was ahead of the main group of traffic that they held back, but I could see what they were doing, so I got in the right hand lane as they raced by.
By that time I was back up to 80 mph... and they passed me as if I wasn't moving at all. If I was guessing, they were easily doing 180-200+ mph. It was unreal, but fun to watch.
The guys who passed me were going much faster than these guys...