Earlier quoted context omitted.
Finland, I believe, scales fines proportionally to your income. Not perfect (the rich can more easily hide their income than the not so rich), but a good start.
Yes - a well-known example was Anssi Vanjoki (former Nokia director) getting a fine of 116,000 euros for driving 75 km/h in a 50 zone. http://news.bbc.co.uk/2/hi/europe/1759791.stm I have heard of other countries that have similar systems.
Actually, a fee of 14 days of income sounds crippling to someone who's poor, so that's an example of it not helping at all.