Michael buys a new car. He is habitual of eating either donut or brownie while going to office. Whenever he stops to buy brownie, he don't face any problem with respect to his car but whenever he stops to buy donut, the car starts giving trouble. This is seen as a coincidence by him at first but when the same problem persists, he drives in the company showroom and tells his bizarre problem to them. The mechanic checks the car but find no problem at all.
On the next day, when he stops to buy donut again, he faces the same problem with the car. He drives into the showroom again but the mechanic finds no problem at all. The next day goes by fine as he stops by to buy a brownie. But on the following day, when he stops by to buy a donut, the car gives trouble again.
Can you find the possible reason behind this problem?