One of the greatest challenges for advertisers is engaging consumers as they drive down highways and walk around major cities where billboards are prominently displayed. Making billboards interactive is a great way to engage consumers and many brands have experimented with the concept. Below is a list of 12 innovative and creative interactive billboard examples:

At the Web 2.0 conference, Rovio North American General Manager Andrew Stalbow has revealed some impressive numbers about the Angry Birds game. Angry Birds has hit 400 million downloads. The game also sees about 130 million monthly users, 30 million daily active users, and 300 million minutes of game-play per day.

At a conference in Hong Kong, Google Inc. (NASDAQ:GOOG) and Samsung announced the Samsung GALAXY Nexus. At the same conference, Google said that the Galaxy NEXUS will be running on Android Ice Cream Sandwich. Some of the new features of Ice Cream Sandwich includes a slick look and faster response time. Below is a list of additional features:

Samsung Electronics and Google Inc. (NASDAQ:GOOG) has revealed the specifications for the Samsung GALAXY Nexus. The specifications include Android 4.0 Ice Cream, 4.65-inch HD Super AMOLED screen with 720p resolution, 1.2GHz dual-core processor, multi-tasking, notifications, WiFi, NF support, People App with Google+, camera mode with panorama, facial recognition, 8.94mm thick, 4.29mm bezel, and LTE/HSPA+ connectivity. [Engadget]

Yahoo! Inc. (NASDAQ:YHOO) has reported their third quarter financials today. Yahoo!’s revenue excluding traffic acquisition costs was $1.072 billion for the third quarter of 2011. This is a 5% decrease during the same time last year. Yahoo! beat Wall Street analyst expectations of $1.09 billion.

Verizon Wireless has announced the details about the DROID RAZR. The DROID RAZR has the Android 2.3.5 (Gingerbread) operating system built in. The DROID RAZR utilizes the 4G LTE network. The DROID RAZR has a dual-core processor clocked at 1.2GHz.

Apple Inc. (NASDAQ:AAPL) has announced the financial results for their fourth quarter ended September 24, 2011. Apple posted a quarter revenue of $28.27 billion and profit of $6.62 billion. During the same quarter a year before, Apple reported revenues of $20.34 billion and quarterly profit of $4.31 billion. Apple sold 17.07 million iPhones, 11.12 million iPads, 6.62 million iPods, and 4.89 million Macs in the quarter.

General Motors Company (NYSE:GM) has announced that they are making advancements in the development of self-driving cars. The self-driving cars has sensors, radars, portable communication devices, GPS, cameras, etc. GM has already started integrating these technologies into cars like the Chevrolet Equinox, the GMC Terrain, the Cadillac Escalade, the GMC Yukon, the Suburban, and the Chevrolet Tahoe. [AutoMedia]