You can exchange some blocks and some items for virtual money using the ATM. Later you can use that money to buy tickets, fuel for your car or to buy/order a new car or a transport vehicle. (Prices can be changed from the in-game computer/smartphone).
Tickets can be bought from the ticket machine. To go through the underground gates hold the ticket in your main hand. You can only sit in the transport vehicle with a ticket in hand. After the ride the ticket is no longer valid and you can throw it away. In the underground the ticket is valid until you exit the underground. The transport card works for 10 times. After that you have to load more money on it for it to be valid again.
Every car or emergency vehicle has a fuel tank which can store up to 100 units of fuel.
Refueling: Leave the car next to the fuel machine and get out of the car. Then right click on the fuel machine. If you want to fill the tank completely then click on the "100" button. If you want for example to add only 30 units then click on the "10" button 3 times.
To buy/order transport vehicles or cars use the transport factory block. Right click on the block. Choose a vehicle from the left and click on it. Then it will appear on the top right box. The button "->" changes vehicle type or color. If you have chose a vehicle and a color then click on "Order" button and wait for the block to complete the order.