GameSpot is offering
impressions of the Half-Life 2 build being shown at E3. What they are showing at the show, is different from what they showed to sites and magazines a few weeks ago. Video is available, but only for GameSpot Complete members.
Still another sequence reveals that Half-Life 2 will have drivable vehicles in it. Freeman hops into a dune buggy armed with a high-tech weapon, and begins yet another escape sequence as a huge flying buglike monstrosity begins its attack with a high-powered machinegun. Freeman smashes through obstacles and Combine troopers in this car, sometimes using its weapon to take others of them out. Freeman eventually gets blocked by destroyed vehicles and hops out of his buggy only to discover a rocket-propelled grenade launcher, which he uses to guide missiles towards his persistent assailant.
Check it out
here. Update: IGN also has
this teaser video.