Firing an arrow at the minecart while riding in a minecart breaks minecart

    public boolean attackEntityFrom(DamageSource source, float amount)
    {
        if (!this.worldObj.isRemote && !this.isDead)
        {
        	if (source.getSourceOfDamage() instanceof EntityArrow) 
        	{
        		EntityArrow arrow = (EntityArrow) source.getSourceOfDamage();

        		if(this.getPassengers().contains(arrow.shootingEntity))
        		{
        			return false;
        		}
        	}
	}
    }