The muscle car from Half-Life 2 Episode 2, constructed in a glorious 6 studs wide.
About this creation
So...exactly what it says on the tin. This is the vehicle of choice for Gordon Freeman in the video game Half-Lafe 2 Episode 2. It's based off of a torn-down then partially rebuilt 1969 Dodge Charger.
This was my second finished model in LEGO Digital Designer, and as such I'm quite proud of how well this turned out, especially given the complexity of the source material.