If Vietnam is really at China-2009 level, VinFast's achievement isn't really that impressive. Especially as the company is probably importing most of the critical parts, especially the batteries, and merely assembling the vehicles in Vietnam.Considering Vietnam is at ~2009 China GDP per capita levels and many many times smaller this is actually quite an impressive achievement.
China itself made the Hongqi CA72 in 1959 -- and remember, in 1959 China was still under nearly total embargo by the West (and would remain under sanctions until Nixon's visit in 1972). So China probably had to make most of the car itself. Now that was impressive.