No. "some 250,000 gas-powered vehicles catch fire in real-life settings every year." [Washington Post's WonkBlog, 1/9/12]
http://www.washingtonpost.com/blogs/ezra-klein/post/are-elec...
Newer electric cars are relatively expensive and have owners who probably don't fiddle with things like that.
I'd be more interested in what percentage of electric cars catch have fire as compared to the percentage of late model conventional cars catching fire.
Gas cars could be more dangerous. It's just that the number 250K doesn't mean much without more information.
Let me ask you: How well did that work for Toyota?