Here is a thought how about you all be non aggressive and slow down and wait for the idiot bikers to get out the way. Drink a beer, do an 8 ball, smoke a blunt, whatever the fuck will make you mellow out and just wait. If you become late you can always use the excuse "These idiot bikers held up a long string of traffic and I couldn't pass them". Shit happens all the time everyone will believe you.