Speeding is illegal but not immoral and says nothing about your character or ethics. Adultery is still considered immoral but not illegal but is a reflection on your character. Murder is both immoral and illegal. An obvious violation of individual rights and civic order as well as a reflection on the kind of person you are.
Actually, speeding says a lot about a person.
It shows they have a complete disregard for other people's safety, and possibly their own. People by default are not build for great speed, or we'd run faster. Hence our reflexes are not really suited for traveling at high speeds, people tend to over-estimate themselves and are not really aware they are piloting an 'x' kg/lbs vehicle. Which, indeed, has the potential to cause serious harm. Not to mention the clean-up afterwards, when they do fuck-up.
Speeding is not an issue you particularly care about (nor do I), hence your moralcompass isn't activated.
That being said, I need this in my life:
Harley, what's your opinion about motorcycles and riders ?