Here is a link to a review by an electric bike blog.
http://www.electricbike.com/specialized_turbo/

The reviewer actually did not think it was worth $5900, wasn't as fast or had as long a range as it's far cheaper competition.
And Specialized calls it "The World's Fastest Electric Bike." Typical Specialized hype.
The best thing about the review is that it mentions who the Turbo's competitors are, with links.