None of those two. Charge by value you deliver. You can build a 100K car in an hour? Excellent.

Don't punish yourself by charging only $100 for the hour you worked on it.

Know your value - which in capitalism depends on market demand - and charge accordingly.

When you are a distinguished expert you can charge more of course as well.

Make a name for yourself and ensure that everybody knows upfront that you are not a "cheap outsourcing" drone.