Another week, another set of teaser pictures of Toyota's worst kept secret, the 2010 Prius Hybrid. This time, the Japanese automaker has released shots of the new compact hybrid's engine compartment, headlight, the Lexus Hybrid inspired illuminated Toyota logo and what appears to be a door handle. The third generation Prius will make its physical debut at the 2009 North American International Auto Show in Detroit next month. From what we know up until now, the new car is going to be bigger than the outgoing model and it will feature a more powerful yet more fuel efficient and tightly packaged hybrid drivetrain system. Hit the jump for the full image gallery.