It's you getting used to the car.
Think of it like this. Kate Bekensale gives up the goods to you. So you swirl those guts around 6 times a day, 7 days a week for a month or so. After that month, it's going to feel normal and you'll want more. It's never as good as the first time you hit it; kinda like coke or heroin.
So feed the habit; add boost
