People visit the Go Green Exhibition in Cairo, Egypt, on Jan. 5, 2021. Egypt's first-ever exhibition on technologies for converting vehicles to use natural gas has witnessed a huge turnout as the government has kicked off a plan to operate vehicles on bi-fuel system. (Xinhua/Ahmed Gomaa)
People visit the Go Green Exhibition in Cairo, Egypt, on Jan. 5, 2021. Egypt's first-ever exhibition on technologies for converting vehicles to use natural gas has witnessed a huge turnout as the government has kicked off a plan to operate vehicles on bi-fuel system. (Xinhua/Ahmed Gomaa)
People visit the Go Green Exhibition in Cairo, Egypt, on Jan. 5, 2021. Egypt's first-ever exhibition on technologies for converting vehicles to use natural gas has witnessed a huge turnout as the government has kicked off a plan to operate vehicles on bi-fuel system. (Xinhua/Ahmed Gomaa)
People line up to visit the Go Green Exhibition in Cairo, Egypt, on Jan. 5, 2021. Egypt's first-ever exhibition on technologies for converting vehicles to use natural gas has witnessed a huge turnout as the government has kicked off a plan to operate vehicles on bi-fuel system. (Xinhua/Ahmed Gomaa)