Staga, that is a funny clip.

A bit about aerodynamic vs. mechanical grip. Nascar almost completely mechanical grip through the tires, and that makes suspension setup critical. F1 on the other hand generates most of it's grip using aerodynamics. The problem is that when one F1 car goes through the air, they stir the air all up and make it turbulent. This turbulent air doesn't flow right over the wings and through the undertray, so the following car instantly has less grip than the leading one. Not just by a little bit either, the following car loses a LOT of grip in F1 right now. Witness Mika unable to pass a MINARDI for THREE LAPS at the US GP!
If you want to make the racing closer and make passing more common, you reduce the reliance of the cars on aerodynamic grip. The track is the same for all, so it doesn't cause the same problems. If F1 did something as simple as outlawing undertrays, F1 would instantly get more competitive. With less aerodynamics, they could go back to running full slicks and still be safe.
An additional benefit of relying mostly on mechanical grip is that the speed of the cars ends up depending more on chassy setup and driver input into the setup process. The way it is now, a good aero designer (read Adrian Newey) can make a car "the car to beat" with mostly aero parts. That's all fine and good, but it decreases the ammount of input the mechanics and team have into the speed of the car on race day. Cars that rely mostly on mechanical grip will not only be more competitive with each other, but there will be more variance in which cars are fast on a given day.
Sure, some tracks like Monaco will always be very tough to pass on, but racing overall would be much closer. Even at a place like Monaco, if you had cars that were mostly reliant on mechanical grip, it wouldn't always be the same damn 4 cars qualifying up front.
All of these things would make F1 more fun to watch, without compromising saftey. IMNSHO. I'm speaking as a former racing driver and chassy tuner here. Now if only somebody would grab Max Mosely (head of the FIA) and explain these things to him! (Maybe using a big stick.)

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