GM "May the Best Car Win" commercial reveals future products
We're guessing that the car in the background might be a production intent versions of the Cadillac Converj ER-EV based off what appears to be a closed off grille and the general size and proportions of the vehicle.
We have no idea what the model on this rolling cart is, though in the video it appears to be a sport truck version of the Chevy Silverado with side exhausts.
The GMC vehicle that we can see the front of in the center of this image is a small crossover concept similar in principle to a first-gen Scion xB. It's smaller than the current xB and Cube, but larger than than MINI Clubman. It could be seen as a competitor to the upcoming Mini crossover vehicle.
The clay model to Whiteacre's left appears to be the upcoming compact CUV from Buick. It's smaller than the Vue and based on the Delta compact platform.
The blue car peeking out from under the sheet is the front of the Cadillac ATS. This is the smaller 3-Series competitor that is likely based on a shortened next-gen CTS platform.
The green car on the left is the production Chevy Spark.