Gretzky's Office
Regular
It isn't the same.
Cycling still suffers from the stereotype of being largely made up of lawless riders. Funding for cycling specific facilities on the road network is a tiny fraction of the overall budget directed at motorists, and roads expenditure for motorists is not seen as a special concession in the same way that spending for safer cycling is.
Motorists don't have this image problem or meet the resistance suffered by cycling campaigners. We are an easily identifiable, minority group and any poor behaviour is quickly picked up and applied to the group as a whole. Sadly, there are still a lot of cyclists who fail to grasp that.
GC
You can attribute a lot of that to the media. How often do you get stories about how it's OK to harass cyclists yet how often do you get articles saying that motorists are "amber gamblers" and speed limit breakers? It's an attitude among motorists that they seem to think they own the road because they pay "road tax". Also, driving a car in towns and cities at rush hour is an utterly joyless experience. A lot of the hatred is because they've paid 30 grand for their metal box, plus fuel, insurance, VED and servicing costs and then they're being overtaken by some skinny oik on a £300 child's toy from Halfords - of course they're going to get annoyed.
I don't buy this idea that a motorists sees one cyclist go through a red light and thinks "all cyclists do that all the time, therefore I will kill them". Some people drive with a lack of consideration for others because they are inconsiderate people.