While the federal Cash for Clunkers program is wrapping up today, the Portland program is just underway.

That's right, local bike shop Joe Bike is offering $200 off a new bike, plus lifetime Zipcar membership, and a tax credit for trading in your old beater.  Check out the details.

Why not trade up from measuring fuel economy in miles per gallon to miles per donuts?  Scientific fact: donuts taste better than gasoline.  And they're more fun (science community still split on this one).