More speculation, but if the $15K price tag and 60 mpg is correct for the hybrid, that's a significant market entry. And, I think the 5-door is a smart move, pardon the pun.
Scion iQ Hybrid, Five-Door and Convertible
Although it's sold all over the world as a Toyota, the very small car (it's about the size of a Smart) will launch in the U.S under Toyota's Scion brand and will come in four flavors. First the iQ hybrid will arrive as a five-door hatchback, followed by a possible sedan version.
Power for the new Scion iQ hybrid should come from a system that mates a 1.5-liter gasoline engine to an electric motor for about 100-120 hp combined. This revolutionary hybrid system is rumored to get more than 60 mpg. Cost is expected to be about $15,000, pricing the iQ hybrid approximately $5,000 less than the larger Toyota Prius.