You’ll find that maintaining a large Circle of Trust can really work to your advantage.
Drivers in the innermost circle can be assigned automatically, making driver selection effortless. When you don’t choose a specific driver or a driver cancels a ride, backup-driver assignment occurs automatically.
The second circle contains drivers that your friends trust and use on a daily basis, so you don’t have to worry about interviewing them personally. Although these drivers are automatically assigned, you do get the opportunity to choose a driver from this circle for a regular ride or as a backup ride in case of cancellation.