I love this new trend of homemade videos with incredible special effects. We've seen a few of them before that deal with UFOs, and now a bunch of dudes went and made a video about attaching helium balloons to their car with predictably great results. This one used a crane as well as computer effects, so you might consider it cheating, but then again, I'd like to see you make something this cool with or without a crane. [YouTube]
If I was a cop that happened to be in the area, I'd find a way to bust them for having a 2k lb vehicle float dangerously around the neighborhood, since the strings can pop and the car can come crashing down on some poor fool that happens to be under it when it does.