Ключевые слова: business, business travel, businessman, businesspeople, busy, call, cellphone, city, city life, communication, concept, connecting, crowd, device, entrepreneur, holding, internet, male, man, metro, metropolitan, mobile, mobile phone, modern, occupation, on the move, passenger, people, person, phone, public, public transportation, railway, reading, rush, rush hour, smart phone, smartphone, standing, subway, telephone, texting, transit, travel, underground, urban, using, waiting, wireless, work,