Greg Kouri, Co-founder of Zip2 along with Elon Musk and his brother, discusses how Zip2 revolutionized online city guides by combining mapping with business listings. They partnered with newspapers to bring rich local content online and enabled direct communication between businesses and users. Zip2's success not only led to a $22 million sale to Compaq but also set the stage for Elon Musk's future tech triumphs.