Another "first" from Tesla: upgrading hardware (battery capacity) over the internet.
Pay over web account, and the car get's longer range.
Essentially the capacity is limited by software.
Tesla — 75 kWh Battery Capacity Upgrade
Order a Tesla Model S | Tesla
Tesla discontinuing Model S 60 and 60D on April 17, ahead of Model 3 ramp
Tesla is discontinuing its cheapest car, the 60kWh Model S - The Verge
HP or TI calculators during 80's used to do such trick with memory.
TI-59 / TI-58 - Wikipedia
Microsoft did this with Windows NT server & workstation ware the same except for a config flag.