Not exactly. That situation is as such IMO.
Cars are an interest to the entire public unlike motorcycles which are an interest to a very small percentage of the public. Lobbyist, politicians, and Oprah watching soccer moms love to pass poorly thought out legislation against things they don't participate in and don't enjoy themselves and therefore can't (or don't care to) take the time to understand how another enjoys it. They read a few blips in the newspaper and make up their mind that this is how it is in whole and the best solution is to get rid of it.
If we were really concerned as a society about saving human life, preventing crime, improving the family unit, improving education, lowering the cost of health care, lowering the cost of insurance, decreasing vehicle accidents, and so on and so on we'd make alcohol and illegal drug (eek gads, that was painful to say!!!) and forbid its consumption. We wouldn't focus more attention on that and less on the (in comparison) extremely small number of problems created by speeding motorcycles, riding in the desert and scaring some turtle, riding mx bikes in our own back yard, helmet laws...or, the ban of semi-automatic weapons, gay marriage, did the prez. get a bj, smoke mary jane, or are his daughters partying to much at school, the proliferation of nuclear weapons (well, okay maybe not that one).
Alcohol is the culprit in such a high percentage of our problems that its elimination would save this country billions of dollars and have a drasitic effect on reducing an uncountable number of problems (domestic violence, auto and motorcycle accidents, shooting your limo driver with a shotgun while showing off in your mansion, kpauls posts;-), etc.). So why isn't it banned??? Because so many people love to get sauced no one would dare suggest it (my god, that would effect them also not just some person they don't give a damn about or some activity they don't participate in).
That's why speeding in automobiles will never be the same as speeding on motorcycles.
Also, why did your car insurance go down? Did you pass the age of 25, did your driving record improve, did you sell the trans am and buy a mini van, did you move to a lower risk area, get a car alarm, start parking in a garage? I doubt the cost to insure automobiles is falling without some factor like the previous ones not playing a role.