++++ 1 . Tax provisions - Internal taxation - Article 95 of the Treaty - Scope - Taxation of imported products in the absence of similar or competing domestic production - Excluded - Excessive level of taxation - Not relevant - To be appraised under Article 30 et seq . of the Treaty ( EEC Treaty, Arts 30 and 95 ) 2 . Tax provisions - Internal taxation - System of registration duty for used cars - No domestic production of cars - Provisions giving rise to over-taxation of imported cars in comparison with those sold on the domestic market - Incompatibility with Article 95 of the Treaty ( EEC Treaty, Art . 95 )