VinFast is slated to unveil three electric vehicles at CES, but the company will be doing so without the help of Michael Lohscheller, who is leaving the automaker for “personal reasons.”

The move is surprising as Lohscheller was appointed CEO in July and was tasked with turning VinFast into a “global smart electric car company.”

Lohscheller has extensive experience in the automotive industry as he was an executive vice president at Volkswagen Group of America, before becoming CEO of Opel. His next move remains unclear, but he released a statement saying it was an “honor to serve VinFast and its people.” He went on to wish the company “all the best” in the future and add they’re on their way to becoming a “successful global electric [vehicle] brand.”

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Lohscheller will be replaced by VinFast Vice Chair Le Thi Thu Thuy, who will also be retaining her old title. The company said she will be “in charge of overseeing VinFast’s business activities in its current markets” as well as “lead market survey activities and expansions into other potential markets globally.”

Thuy said she is “thrilled” to become CEO and will help steer “VinFast towards success in the international market and winning the heart of global consumers.” She went on to extend her gratitude to Lohscheller and wish him the best of luck in the future.

It remains unclear if the executive shakeup will result in any changes to the company’s plans, but VinFast is slated to introduce A, B and C segment electric vehicles next month. Little is known about them, but they’ll slot beneath the e35 and e36.