I guess the cops have a giant robot transformer thing now.
This is the new Ambush event in the Terminal Velocity DLC Pack for Need for Speed: Most Wanted (2012) released on February 26th, 2013.
This one seems pretty easy. There's only 2 cops following you at the start, and tons of space to drive. If you get lucky with the cop spawns when you land, you can end this pretty quick. I used the stock Porsche 918 Spyder for this video.