[Purist]

Chunterer, aero doesn't have a damn thing to do with it, well, except for making the slipstream stronger. Even in low-downforce trim, there weren't any quick corners that ended up not being flat.

The problem is the compression and stretching in the physical gap between cars that occurs when the speeds swing wildly from one end of the spectrum to the other. If you have one car-length from your nose to the leader's tail in a 55-mph corner, and you go up to 220-mph, but the time gap holds, your nose is now SEVEN lengths behind the leader's tail. (The time difference is measured by the transponders, which means that time gap at 55-mph represents TWO car-lengths.)

One thing people forget about those wingless F1 cars, is that they raced on tracks like the old Zandvoort (with NO chicanes), the old Monza (with NO chicanes, and the old, faster Lesmos), the old Spa-Franorchamps (where the 1970 fastest lap was 152-mph average), and even Monaco (with NO "Piscine" complex, NO Rascasse, a FAST chicane, and a faster Ste. Devote). Passing on the Nordschleife in the old days wasn't the easiest thing. The trouble now is, you aren't allowed to build new tracks that would actually suit good racing for cars like those old ones, and the required run-offs are prohibitive, because that would take up WAY too damn much land to be practical. (BTW, run-off size is dictated by terminal velocity on the preceding straight, and with low drag (no wings) and long straights, those top speeds are going to be fairly high. Low drag also means that stopping distances for cars become longer, including cars that leave the track for whatever reason, which means run-offs need to be that much larger.)

There's another key safety concern with those old cars, however. They were often lift-producing while going forward, or were quite aerodynamically neutral, which means they were unstable. They're easier to launch, less predictable when in the air, and have little in the way of any self-righting mechanism just using the air flowing around them. In this day and age, that won't be acceptable.