The iPad App that is free for today - February 20 2012 - is Pushcars. Normally, this is a paid app, costing $0,99 in the app store, but today, you can get this iphone / ipad app for free.

Description

1,5 millions of players are addicted to Push-Cars (iPad, iPhone, iPod & Mac). Be ready to enjoy this addictive logic-puzzle game where the good and eco friendly cars leave the cities while the bad and polluting ones keep on crashing!

? Apple: "New and noterworthy".
? TouchArcade: "I'm quite happy with Push-Cars. I've still got a few Game Center achievements to pick up, but I'm rocking the leaderboards and I've devoured the puzzles. They're just the right mix of sadistic and fair." 
? Arcadelife: "This is one of the best puzzle games I’ve seen for quite a while. Everything about it is very polished. Anyone who even slightly enjoys puzzle games on their iPad should be perfectly happy with this game." 
? AppAdvice: "If you enjoy puzzle games and the high level of patience that goes with them, you’ll probably enjoy this game."

Features

• Challenging levels based on authentic American cities. 
  Unique puzzle gameplay.
  Retina display graphics. 
  9 Different cars with different behavior. 
  Unique achievements with game center integration. 
  Exclusive music theme. 
  Game Center, Facebook and Twitter integration.