Betekenis "on the go":
1) Actively traveling; busy; moving often.
* A good suitcase is essential for someone who is on the go as much as he is.
2) To have started.
*The new initiative is now on the go.
Optie 1: Possibilities are moving often.
Optie 2: Possibilities have started.
Het is maar net wat je erin wil lezen denk ik. Maar mij persoonlijk lijkt de laatste optie logischer.
P.S. Niet te verwarren met to-go:
I'd like two burgers, two small orders of fries and two shakes, to go (takeaway, takeout)