Probably the most significant picture (above) of the bunch is confirmation that the purplish car seen driving with the Autobots is not Jolt the Chevy Volt but a blue Mercedes E350. A blue, luxurious but fast car makes me think "Tracks" but really no telling what the name of the character is. With that image we know of five total new Transformers vehicles - the three stunticons (faction unverified but assume Decepticon), the Autobot Mercedes and the Decepticon Chevy Tahoe. The TF3 Cheat Sheet has been updated accordingly. Thanks to Mauricio for YouTube links.
Videos: Stunticons & Autobots | More Stunticons | The Sets | Wacker St. Sets