Because Boyd Coddington is a overgrown sissy who wants his way and the show got really BORING! This is just an example of bad TV.
It needed to go away!
Hey! All the Bike shows are alive and well, bigger auduence than hot rodders I guess! But then again, everything comes 360 anyway.
I guess it is much cooler to ride a expensive aftermarket T.V. bike than to own a hot rod these days!