Go-getting adjective – Having a strong desire for personal advancement. High-octane and go-getting are semantically related. In some cases you can use "High-octane" instead an adjective phrase "Go-getting".
High-octane adjective – Used of gasoline; having a high octane number. Go-getting and high-octane are semantically related. You can use "Go-getting" instead an adjective phrase "High-octane".