Get into a car anywhere in the world and you are pretty much guaranteed that you will understand how to drive it. Cars have the ultimate user interface and Formula 1 cars perhaps represent the pinnacle of this UI, with the most demanding requirements.As recently as 1992, F1 steering wheels were round with 3 buttons (neutral, drinking water supply, radio), but since the advent of paddle gear changes there has been a sudden explosion of electronics and feature driven complexity.The complexity is ubiquitous, all 11 Formula 1 teams produce cars with more or less the same multi button design allowing adjustment and tweaks of traction and aerodynamics from the wheel itself. Unlike a road car, space and focus constraints mean that the entire dashboard is on the steering wheel. This is something that will no doubt be copied, unnecessarily, in consumer cars in future, but would that be a UI improvement?Given that all 11 F1 teams have converged on a remarkably similar UI, independently, you would think that dashboard steering wheel style was a rational design, however its complexity possibly caused Lewis Hamilton the 2007 F1 championship, when he accidentally pressed the neutral button (top left of the 2007 McLaren Mercedes wheel).We have gathered together as many of the modern style wheel designs that we could find and put a date to, to demonstrate the UI pattern. What is clear is that there is no clear accentuation of features (color, size) by how often the are used, merely by position. Even if drivers like Hamilton are experts and fully familiar with the UI, there is a tiny percentage chance of error. Our guess is that this trend in car UI would be a mistake if it filters through to everyday cars, and that F1 cars will revert to a more simple UI over time.