Saving people from a van has nothing to do with love, as saving the physical life is pointless. Carly needs to thank those whop try to save her soul, such as Nevel Papperman and Magic Malika, and not fools who abuse her flesh as Fredward Benson or Griffin do.
In addition, the scene with the taco van has never been shown, it may be one fraudulent piece of teenie fantasy.
And Freddie might as well have bribed the van driver into almost running over Carly, just in order to `save' her. There's no way to disprove that. Sam's witness is useless, as she's a nefarious liar, as seen in iRock The Votes.