The online racing simulator
Red Rover: Driver map location
Red rover red rover... uhh.. send Scawen right over.
Man am I on a streak with suggestions, this I think is the best of the latest 3.

Red Rover as it is so lovingly called does basically what it says, it locates a driver on the map by turning his arrow on the track red (figured red would be the most visible color out of the current array). What you would do is put your mouse over the driver's name, or steering device like you were about to view him, but do not click, just put your mouse over his name, and it will glow a bright red on the map, so if you're looking for someone specific, you can see exactly where that person is mid-race without having to view them and quickly change back to your view, only to find yourself crashed into a wall.
I think most racers would struggle to make use of this, which could otherwise prove quite useful. What i'm sure of is that revenge wrecking would be made easier. It's an interesting idea, but tyically the mouse is hidden in normal play and this would be very difficult to make full use of as a driver with legitimate intentions.

FGED GREDG RDFGDR GSFDG