As a PM of Uber, how would you solve the problem of sudden increase in demand of cabs when an event is over?

In case of an increase in demand, it is important to minimize the waiting time for the rider. I would like to propose the following solutions that could be handled from the Product's side in the account of our problem statement:

1. Increase First Mile Radius: On usual days, cab drivers are assigned that are available near rider's location, say within 5kms of radius. In this scenario where we could end up having minimum/zero availability of uber drivers, we need to increase the first-mile radius and club zones so that other available drivers that are far from the rider's current location can also be assigned. Thus, task assignment changes will be done from the backend and accordingly will be visible to the riders on the app.
2. Increase surcharge price: We can leverage this opportunity of increase in demand to meet the supply by increasing the surcharge fees. With an increase in surcharge fees, more drivers will be activated in the given area thus, indirectly meeting the supply-demand.
3. Nudging deactivated drivers: Many of the drivers remain deactivated in the given area especially at night time. It is important to notify these drivers highlighting the surcharge fees that they might miss in case of increased demand.
4. Rotating Uber Pool: Due to the increase in demand, the requests for the shared uber pool are bound to increase. With properly managed pick-up and drop locations, drivers should be able to rotate the shared pools to cover maximum customers.