That's why I brought up Texas in particular. Interstate 45 as an example is effectively at saturation. Even if you add new lanes to it, you only get marginal throughput benefits when you actually try to get between Dallas and Houston or commute to either city from the region between them. The same goes for I-10 out of Houston.
Texas has reached the point where car ownership is actually costing the state and local governments astronomical amounts of money for marginal amounts of congestion relief (that is then immediately saturated).
I don't deny that cars have a place in low density regions and I think they are great for specific uses or areas but generally I believe that cars hinder growth in any metro environment in the long term. Doubly so because car centric infrastructure is extremely hostile to anyone who doesn't use a car which makes transition at that density threshold extremely painful for everyone involved.
Cycling at 80F is okay as long as you have a shower at the destination. (Most offices don't.)
Also, cycling in a city, when you cycle for 2-3, maybe 5 miles, is fine. Cycling for 20 miles is pretty taxing and time-consuming, but in a low-density, car-oriented environment 20 miles correctly qualifies as "nearby".
1. Shower at home.
2. Have a change of clothes.
In the Before Times (pre-COVID) I cycled to work five days a week and never showered there (even though available). (And believe me: people I worked with would have told me if it was a problem. )
Sweating does not make you stinky. Sweat is not stinky. It is bacteria that causes the stinkiness. If your skin is (relatively) clean, there would not be any (food for) bacteria and you won't stink.
Also:
3. How much you sweat depends on your exertion level: take it easy and you don't sweat as much, at least in the morning when it's cooler. (I'm in Toronto, where summer afternoons are sometimes >30C, and I've cycled home in 35C weather; high-ish humidity too.)
As much as I agree with your general point, this isn't strictly true.
For a sizable chunk of the population, sweat doesn't contain high concentration of compounds that when digested by bacteria produce body odor.
However, despite being a sizable population, people lucky enough to have this trait are in the minority. I don't know the actual percentage but among European populations it's as low as 2% and among east Asian populations it's as high as 50%. Either way less than half the population.
The rest of the population has variations of that trait and their sweat produces moderate to extreme amounts of amino acid based compounds that when digested by bacteria produces the VOCs that make up the infamous body odor smell.