today i saw this Subaru STI at noon, the driver went to the resturant next to my work place. I found the driver is not there and there were no key, but the engine still makes sound, and muffler still make noise. After like 5 mins, i heard the engine stops and muffler stops making noise. Later on afternoon, this Evo 8 parked in the parking lot too, same thing happen driver is off, and locked the car, but engine still making noise. Then the driver and his fd found that resturant was close they went back to the car, the driver didnt even start the engine just drive off. I want to know why these car didnt turn off engine itself and wat is the point of it.