Why is my boyfriend so obsessed with cars and his own car?

He wants to make it faster to accelerate and stuff like that. Why would he want that? He had this obsession even before he met me of course after meeting me it isn't as obsessive as it used to be before meeting me but he still has this stupid idea. So why? Why would he want something as extreme as modifying his car to make it even faster than it already is?

Why is my boyfriend so obsessed with cars and his own car?
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