So by my apartment building my car (as well as my roommate's and friend's cars) were trapped in the snow with a layer of ice underneath. With traction almost nothing, the best way to get the car out is rocking ( drive forward, brake, reverse hard. Rinse repeat.) Salt and sand work quite well for added traction. If some one can push for you, the best way is knees dug into the snow and push, or use an ice pick or snow brush scraper to dig foot holds in. Hot water...almost no help. Creates a surface even more slippery than before, but does make it easier to push if you use enough.
Good luck to everyone still snowed in!