Wouldn't it be sweet if your local congressman threatened to overthrow the government unless your car insurance bill came down? This is exactly what's happening right now in Canada, where almost half the country buys auto coverage directly through the government and the rest have politicians willing to put the squeeze on private insurance companies. Turn on the news in Ontario -- Canada's largest province, with 38.4 percent of the population -- and see for yourself: One party is threatening to topple government if the provincial premier doesn't demand that auto insurers cut their rates by 15 percent, about $220 U.S. on average. "It's a hot-button issue," says Sean Graham, an executive of Kanetix, an online insurance shopping site in Canada. "They're threatening to call an election on it and overthrow the government based on auto insurance." What may be even more surprising to Americans: This isn't the first time the price of car insurance has taken center stage in Canadian politics.