IT-company Yandex asked Avtovaz, as well as Chinese car manufacturers BAIC Group and Chery to increase supply of vehicles for leasing companies with which Yandex.Taxi works, Forbes reports with reference to company's letter to president of Avtovaz. In a letter company notes that it needs more than 50 thousand cars annually to update its taxi fleet. Forbes source said that Yandex fears a shortage of cars in a year.