What if you plan to drive from the coast to the top of a high mountain? How will you maintain the proper tire pressures during that trip?
Aha... a serious problem in search of a solution. Enter... the CVTPA (the Constantly Variable Tyre Pressure Adjuster). Tyres no longer the right pressure because you just hitched up to your trailer and you are loaded with a family of 5 and all the stuff for vacation? No problem... the CVTPA automatically puts you at the right pressure. Even does minor adjustments such as barometric and temperature changes, extra load because of buying more than you expected at the store, type of road conditions, how fast you want to go.... and even when your 400 pound brother-in-Bernie borrows the car to go out and get some fried chicken and puts excessive load on one side of the car. No variable isn't programmed into it to give you exactly the right pressure.