Spontaneously in English usage is something done without pre-planning. Spur of the moment. As in "we spontaneously decided to drive to LA" In this German conte

Spontaneously in English usage is something done without pre-planning. Spur of the moment. As in "we spontaneously decided to drive to LA" In this German context it's more like "we will figure it out". As in, we plan to meet up yes, but whatever we will do we'll figure it out at that time. As in "we'll meet at 3, hang and figure out what we'll do. Maybe we'll go somewhere"