As you can see in the above picture, it is unmistakably Zach Galifianakis hopping into a Mercedes E-Cabrio. The spy video, which was shot at a closed freeway in Orange County, takes you behind the scene of Hangover 3. This scene shows Zach causing a massive crash while towing a trailer with his convertible Mercedes.
Using a drop-top Mercedes in the new film is a kind of connection to the first Hangover, which used the classic Mercedes 220SE. This also means that Mercedes is most likely sponsoring the new film. The website whom obtained this film, StarzUncut.com has some details on the scene you might be interested in:
“Allen was driving down the freeway in a brand new Mercedes-Benz E350 Convertible. The Mercedes had the license plate DADSBOI, which is funny since Allen’s parents are always spoiling him. In the back he was pulling what appeared to be an animal trailer. Later I found out that the trailer is actually for a giraffe that gets loose on the freeway after Allen crashes his car into a semi-truck. It was crazy, there was tons of smoke and the cargo from the semi-truck spilled all over the freeway. After the crash I saw Zach Galifianakis running from the scene. The cops had the whole place on lock-down and tried to make sure nobody could see what was going on. I was able to get some footage of the crash right before a motorcycle cop made me leave.”