> I added an update to the article looking at what happens when you vary the average car length (corresponding to the % of trucks on the road), fwiw.

That's silly, at most reasonable traffic flow-rates the difference in a couple of feet between a short car and a long car (esp with how uncommon the outliers are) is insignificant compared to the constant overhead of the per-car padding. And below reasonable traffic flow you're already at a high enough density to cause catastrophic traffic speeds.

I just read some of your older blog posts. They're close to my research and well written and very informative. Keep up the good work!

Cheers

Thanks! What's your research on?