Judgment of the Court of 16 November 1993 in Joined Cases C-20/93 and C-21/93 (references for a preliminary ruling from the Tribunal de Commerce, Brussels): Deutscher Kraftverkehr Ernst Grimmke GmbH & Co. KG (DKV) v. SA Générale de Banque (C-20/93) and Deutscher Kraftverkehr Ernst Grimmke GmbH & Co. KG (DKV) and BV Mobil Oil v. SA AG de 1824, formerly AG de 1830, and SA Générale de Banque, intervener: Belgian State (C-21/93) (Transport of goods by road — Professional competence — Financial standing)