We were in our golf cart and following a bunch of bikers.The last biker was weaving all over the road including once in awhile riding on the white line on Morse Blvd below 466. They turned a corner and a panel truck turned and was now behind them including the last biker that was weaving. The biker weaved next to the truck and was hit. No obvious physical damage but the bike was damaged. One of the bikers asked us if we saw it and we said yes and the last biker was weaving into the road and the truck was not at fault in our opinion. At which time the other biker said so what if the biker was weaving into the road as the bikers can ride anywhere in the road including down the middle. I said that was not true and they started to be pretty angry when challenged on the subject. This is why there are some real problems as the biker's believe they own the road and cause the poor drivers a serious problem.!! There should be an education program for them!!