A few years ago I was the only vehicle in sight on an interstate at 2 pm. I was doing 20 over when two crotch rockets blew past me at 120 or more.
And one was riding on only the rear wheel.
Used to live near a new part of interstate by pass in Phoenix valley where the motorcycles would meet at 2:00 am to run it out to full speed. The noise would wake me up and I am hard of hearing.