Can you ask your developer to initiate pull request?
We will get feedback from other developers.
Following doctype already present in ERPNext
- Vehicle,
- Vehicle Service
- Vehicle Log
We need to create Driver Doctype and Delivery Tour or just Tour
My suggestion if to Create Packing Slip form Delivery Note or Sales Invoice(Update stock checked)
Create Tour from Packing Slip
We can also implement Bin Tracking Algorithm that will easily create Delivery Tour based on Vehicle size and packing slip size.