Horsepower. Is it true that the legal limit of hp in the u.s.a. 600? For street driving?

As far as I know there is no limit on horsepower in the us.

The 2015 dodge hellcat has 707 and is perfectly legal

Lol merica. No limit, long as the mods don’t violate any laws in themselves, you can have as high hp as you please. Some parts of the country 1000hp is even seen pretty commonly

there is no limit to the amount of power a car can produce!