Likewise, BMW withdrew its own testfleet of 100 cars with internal-combustion engines modified to run on hydrogen.
同样的，德国宝马汽车公司也收回了他们原有100辆改装用来燃烧氢原料的内燃发动机的汽车的测试车队。
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Altair is strictly a design and engineering firm, so it is looking for someone to join it in building enough buses to launch a demonstration and testfleet.