Hi, Wim , good question! This feature is currently not available for Divvy riders. As you mentioned, the dockless-capable nature of the Divvy system complicates introducing this feature a bit. Since the Divvy system is a hybrid model, supporting pedal bikes and ebikes alike, this feature isn't something we can currently support in Chicago.
Thanks for posting your interest in this feature. Community feedback is super helpful for our team to pinpoint what riders and BAs really want and need. I've marked this conversation as feedback to track interest in this feature.