I've read the story, but frustratingly can't remember its title or who wrote it. The ending works well because everything in the car is handmade and overengine

I've read the story, but frustratingly can't remember its title or who wrote it. The ending works well because everything in the car is handmade and overengineered, and the "improvements" are all cost-saving measures. In doing so, he ends up making the car nothing like the original and nearly the same as the cars the maker was reacting to.