S-Oil has set up the GooDoil tree, a caked-shaped, 5.5-meter-tall Christmas tree featuring the company's mascot, at Seoul Station and another at Ulsan Station to celebrate the holidays, the oil refiner said Tuesday. S-Oil is carrying out an Instagram event that will give out flight tickets and mobile gas tickets to those who post a picture of the GooDoil tree on the social media platform through Jan. 9. (S-Oil)