Release readiness & handover
Readiness checks, then odometer, fuel, condition and keys before the customer drives off

Pickup Handover
Vehicle verification isn't part of this demo.
A last reminder fires an hour before pickup, then odometer, fuel, condition and keys are recorded against the booking right before the customer drives off.
The handover check becomes part of the booking record: the same record both sides can point back to if a condition question comes up later.
Open the booking, start the pickup handover, record the handover, then open the return workflow.