How to Play Train Conductor by Cat (In-Hand Print & Play Game)

About Train Conductor, from BoardGameGeek:

Train Conductor is an in-hand solo print & play card game. You are a train conductor and your job is to balance paying customers and usage of your rolling stock. Your goal is to transport as many passengers as possible while avoiding empty seats that cost money but don't bring any profit. For each card you draw, you choose if you want to add passengers or a railroad car to your hand. Fully occupied cars will earn points, but empty seats will reduce your score. Choose wisely and plan ahead, because you don't know what the next card will bring. -description from the designer