Everything is iterative.

Iterative design methodology is something to be proud of, not shunned. Learn from others, test hypothesis' and make mistakes!

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Image Attribution:

Image: Bugatti Chiron at the Goodwood Festival of Speed 2017
Author: Andrew Basterfield
Source: https://commons.wikimedia.org/wiki/Category:Bugatti_Chiron_at_the_Goodwood_Festival_of_Speed_2017

Image: A Bugatti Veyron 16.4 Grand Sport on display outside Bentley Düsseldorf located in Düsseldorf, Germany
Author: M 93
Source: https://commons.wikimedia.org/wiki/File:Bugatti_Veyron_16.4_%E2%80%93_Frontansicht_(1),_5._April_2012,_D%C3%BCsseldorf.jpg

Image: 1910 Model T
Author: Shipler Commercial Photographers; Shipler, Harry
Source: https://collections.lib.utah.edu/details?id=525524

Image: Benz patent motor car
Author: Public Domain
Source: https://commons.wikimedia.org/wiki/File:1885Benz.jpg

Video: Roadkill VS Whizzbee
Author: M & J Robotics
Source: https://youtu.be/ZsYXyHHNWoo