The announcement came after a meeting at the presidential palace in Jakarta between Indonesia's President Joko Widodo, SoftBank's Chief Executive Masayoshi Son, Grab CEO Anthony Tan and Grab Indonesia President Ridzki Kramadibrata. The group discussed Indonesia's ambition of becoming Southeast Asia's largest digital economy over the next few years by focusing on investment opportunities in the technology sector and developing home-grown technology talent, Grab said. Son also said SoftBank would further invest in Indonesia's biggest online marketplace Tokopedia, and explore areas including renewable energy and electric vehicles in Southeast Asia's biggest economy. "We will study the opportunities. We are interested in electronic vehicles, batteries and the charging systems," Son told reporters.