To be fair: while large on the outside, the interior space of many modern SUVs isn't great either. So you need either a large SUV, a classic station wagon, a minivan or any other car designed for space.
Incidentally I have a friend who is also 6'5", and he ended up with a Golf Variant, as this turned out the most comfortable car for him back then.
No sedan meets that requirement. I have to buy a midsize+ SUV or minivan, period.
Even for my personal use, cars are uncomfortable and painful for me to use. I drove a 1999 Accord until recently as a commuter. The 2018 Accord was too low for me (to meet the CAFE targets) and most midsize sedans has similar challenges. I ended up choosing between a Honda Fit, a Honda Pilot, BMW X3 or Chevy Tahoe. I ended up with the Pilot as a trade off between comfort/efficiency/cost.
The fetishization of ridesharing in the Valley and on HN reveals the blind spot of the culture of tech — family. Try using Uber to move two adults and 2-3 kids.