Some people out there are fearless. Take this guy for instance; he doesn't seem to be the least bit distracted by the vehicle that's passing him and at the same time, being video taped. I wonder what possesses a person to do such a thing.
Video: LiveLeak
Same reason dogs lick their b@&*£&^s - because they can.
The bike is a Royal Enfield Silver Bullet.
It was an English bike from the 40's and 50's that was made in Enfiled (what a surprise)and under license in India.
It's a 500cc Single cylinder thumper, a simple joy to look at.
http://www.royal-enfield.com/bullet-classic.htm
They are still made brand new to this day in India.
You can buy them from the web site.