bike rack 101

ok, so the lion's share of my morning has been spent in tutorial...bike rack tutorial.....at some point on monday i will be called upon to set up the rack on the back of my car to transport a bike from new jersey......while i have been around bikes for all these years...there has been no knowledge transferred by osmosis.....yikes!.......my spouse assures me that i can manage to do this, especially if i break out the directions.......