It's not easy remembering a complicated rap about the new Lexus hybrid at the 2009 Detroit Auto Show. This spokesmodel makes it most of the way through this one before losing her place.

Mercedes unveiled three green concept cars at the Detroit Auto Show, including this fuel-cell car (shown in cutaway form). The F-Cell will have a range of 400 kilometers on highly pressurized hydrogen.

Jim's other posts from the Detroit Auto Show:

Jim Motavalli ( @jmotavalli ) writes about cars, technology and the environmental world to anyone curious enough to ask.

Two more videos from the Detroit Auto Show
Take a look at Mercedes' new F-Cell car, and watch a spokesmodel flub her lines.