AMENDED AND RESTATED PLEDGE AGREEMENT made by AEMETIS, INC., AEMETIS INTERNATIONAL, INC., AE ADVANCED FUELS, INC., AEMETIS BIOFUELS, INC., AEMETIS AMERICAS, INC., AEMETIS ADVANCED PRODUCTS KEYES, INC., AEMETIS RIVERBANK, INC. each as a Pledgor, and...