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  1. Why do we need a hold mode if the engine is running at a constant RPM?

    Chevy Volt Engineering and Design
    This question could be really silly as I might be missing something, but why do we need a hold mode if the engine is running at a constant RPM already? The idea behind hold mode is that if you have, say, 5 miles EV range left in the battery while driving on the highway and you know you will hit...
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