Google Now will cache your cards for when you're without a connection

Google Now users that happen to find themselves in deep cavernous places without a cellular signal to be had will now be able to view their cards even without a connection. The latest update to Google Search enables the caching of cards for when your phone is offline and you still want to check in with whatever Google Now is suggesting you do. When you without a connection and trying to use Google Now, you'll be told how long ago the content was last updated, so at least you'll have an idea of how old those suggestions really are.

source: androidcentral