If We Had $2 Billion... President Obama and Mitt Romney (and their super PACs) have officially spent $2 billion on their campaigns. Here's what else that money could buy: A year's worth of health insurance coverage for about 127,000 families More than 7,000 homes in America 36,300 car elevators More than 3/4 of a rover that can be sent to Mars, delivery included Two billion McDoubles Four years college tuition for about 57,800 students The Boston Globe - 10 times The Burj Khalifa, the tallest building in the world in Dubai (with enough left over to buy 500 million McDonald's double cheeseburgers) A used 2004 Toyota Camry for 300,000 people John Edwards's haircut for 1.6 million people A five-minute peek at Mitt Romney's tax returns (psyche! That's priceless.) A five-minute peek at Barack Obama's real birth certificate (psyche! That's free.)