The Volvo Group and Volvo Car Corporation are two companies with a long shared history. However, what was originally one company began with a rather unpromising start since Volvo's founders Assar Gabrielsson and Gustaf Larson had no experience in the automotive industry. During its first year of production, Volvo sold a very modest 300 cars. However, the following year business began to really take off, when the company also started manufacturing trucks and buses. In 1999, the Volvo Group sold its car business. Since then, the two companies have continued to grow. Volvo Car Corporation is now in the premium auto segment and last year sold around 450,000 cars in 120 countries, with the USA as its single largest market. The Volvo Group produces trucks under the Volvo, Renault Trucks, Mack and UD Trucks brands, together with buses, construction equipment, marine drive systems and aircraft engine components. The Volvo Group is the world's second largest manufacturer of heavy trucks and Sweden's largest company.