The top numbers 1-5 are not position, it's an agressive-driving indicator. At Level 1, your driver just takes a nice Sunday drive around the course, slowing down for corners, saving tires, etc. At Level 5, he's driving like me trying to catch first on the last lap. In other words, like a bat out of hell, and tires be damned. There's also an "Overtake" switch that instructs the car to do whatever is necessary to pass the car in front of it, and a "Pit" switch that tells the car to come into the pits the next it passes them.
All of this is native to the B-spec mode where you're controlling an AI driver. The normal driving mode is very similar to what we've seen before, with only the tiny additions of gas/brake indicators and a fuel guage (for races that require it, like the tire guage). And some of it's been slightly rearranged, but otherwise it's the same. Oh, and there's a G-force indicator below the dash that indicates how many lateral G's you're pulling on corners. There are plenty of videos from the BMW demo (right here on GTP) that show what the interface will look like.
(imagine running out of gas all the way accross nurburg half way around to the pits.)
