First electric taxi service Green and Smart Mobility Joint Stock Company (GSM) -- the first taxi service supplier using electric cars in Vietnam -- launched its Green SM taxi service in Hanoi on April 14. However, there are two major barriers to the transition to electric taxis -- the lack of charging infrastructure and high investments. The association urged the government to create preferential mechanisms and policies to encourage the use of electric taxis. However, there are two major barriers to the transition to electric taxis -- the lack of charging infrastructure and high investments. The association urged the government to create preferential mechanisms and policies to encourage the use of electric taxis.