Ho do you make a detailed algorithm?

You are an Algorithm Engineer for an automotive company and you have been put in charge of a project to make a program to improve something of your choice on their vehicles. The improvement can make the car safer, more convenient, or just look better. Be creative. You and your team must submit the following to your manager:

1)Make a detailed algorithm to make the improvement. The algorithm needs to have multiple steps and require you to make decisions. It must contain at least one conditional operation, one iterative operation, and one sequential operation. The algorithm needs to show detailed planning with steps being prioritized.

2)Make a transition diagram to show the probabilities of someone who has never bought their vehicle, to purchase one now as well as someone who currently owns one of their vehicles to purchase another.

Make a presentation to show your manager that includes the advantages of the improvement as well as the cost effectiveness.