Working vehicle and attachment usage system

A working vehicle comprising:

• a machine body;
• a lifter on the machine body;
• a linkage to attach and detach an attachment thereto and therefrom, the linkage being supported by the lifter such that the linkage is raisable and lowerable by the lifter;
• at least one hydraulic actuator to drive the lifter;
• at least one pressure detector to detect a pressure of hydraulic fluid supplied to the at least one hydraulic actuator;
• a user interface to display information:
• a controller configured or programmed to select identification information relating to the attachment attached to the linkage and start a predetermined process based on the selected identification information;
• wherein
• the lifter is operable to be driven by the at least one hydraulic actuator to raise or lower the linkage;
• and
• the controller is configured or programmed to select the identification information relating to the attachment attached to the linkage based on the pressure of the hydraulic fluid detected by the at least one pressure detector when the attachment is caused to be out of contact with a contact surface by the lifter, and perform the predetermined process in which the controller causes the user interface to display information indicating that the attachment corresponding to the selected identification information is attached to the linkage.