How about bringing your old car in and getting a brand-new one in return? That sounds like a great deal! Programs like this have been tried in Europe to boost the car sales.  President Obama wants to try this at home, too.  Maybe the vehicles purchased in this way will be called "Obamobiles"? Long-awaited climate change legislation is unveiled today by Reps. Waxman and Markey, but many gaps will need to be filled in as the House Energy and Commerce Committee considers the bill later this spring. As the leaders of the G-20 countries gather in London—President Obama just left on Air Force One—an interesting take on what other countries are doing to spur domestic demand.  Looks like the “Buy America” idea has been standard operating procedure in most industrialized nations, despite all the hoots and howls.  Yep, the world's largest economies award most government contracts to domestic firms.