Currently if a vehicle type or fuel is forgotten during the inventory stage, the user has to come back and redo all the operations.
This implies:
Adding an UI similar to the inventory one at both scenarios stages
Adding a backend process to auto fill previous steps with missing data, and default (0) values for the new vehicle and fuels. If multiple fuels are set, set one randomly at 100% of fuel share, emissions will be null anyway.
Currently if a vehicle type or fuel is forgotten during the inventory stage, the user has to come back and redo all the operations.
This implies: