The world's largest carpooling platform BlaBlaCar said soaring energy costs have pushed 600,000 additional drivers onto the app this year -- 20 percent more than initially projected -- as commuters look to offset the rising cost of fuel.In India, its single biggest market with more than 20 million users in 2025, the number of passengers has increased by 40 percent since the start of the US-Israeli airstrikes against Iran on February 28.Last year, the global carpooling leader posted record-breaking figures in the world's most populous country India -- outpacing Brazil with 19 million users and France with seven million, according to Benjamin Retourne, the platform's product director.This trend has been more pronounced in countries where fuel price increases driven by the war have been sudden and significant, combined with limited government support, such as in France.The platform works by connecting drivers and passengers willing to travel together between cities to share costs, with the app in most of its 21 operating nations taking a 20 percent commission.Saves fuelIndian Prime Minister Narendra Modi earlier in May urged the country's 1.4 billion citizens to save fuel by making greater use of carpooling and public transport.India imports approximately half of its crude oil via the Strait of Hormuz, which Tehran effectively closed in retaliation to US-Israeli strikes launched in February.Retourne said a decade ago, when BlaBlaCar first launched in India, even "after two or three years, it just wasn't catching on".The company, founded in France in 2006, therefore stopped investing in the world's fastest growing economy but kept its application running from its Paris headquarters, unlike many large foreign groups that outsourced their services to India.