An alternate present, where the timing on stoplights is driven by a platform much like Google's targeted advertising platform, allowing the rich to auto-pay for priority. And so commuting becomes a game of blending into the ever growing train that follows each oligarch around town, slip-streaming the whale through the intersection.
In response, the rich start traveling in caravans, both because they feel unsafe, and because if they are going to be paying for 30 seconds of priority traffic time then they are going to damn well use all 30 seconds of priority traffic time.
You can tell it's a caravan because they're usually all using the same vehicle. Rows and rows of black SUVs.
In due time these, too, are compromised by traveling bands of rogue commuters, a loose coalition of Uber Eats runners, Task Rabbiteers, and the occasional person who still has to physically commute into the office. The caravan admins are won over with offers of food or bills or sex. What's a small wagon here or there in a train of 18+ vehicles? So long as the train keeps rolling.