I have a question for those experienced scripters:
How would you create a car chassis and why? With “How” I’m referring to methods such as using constraints, vectorforces, anything that may work in getting a car to move.
I’m asking this because I’m planning to code a car chassis, but can’t decide for myself what would be the smartest method on approaching it.
You don’t create a car chassis. You use an already made one and modify it to your liking. The welding code and the driving code becomes gradually harder the more advanced your system becomes. Basic welding and driving can be done with ease (remotes for driving and some auto-welding code), however once you get to advanced chassis programming (physics, suspension, etc.) you will see the difficulty and lack of content/knowledge in that area spike.
At the end of the day it is your choice but I highly discourage programming something when there are already very advanced and free to use ones that are easily modifiable in the toolbox.
This is a very bad answer, even though im 3 years late
Please propose your method then 
3 years later and I still 100% agree with what I wrote, creating a chassis from scratch is utterly useless are better off using an open-source one. Saves hours of coding, time debugging, and helps you learn. 99% of cases don’t require using a custom chassis at all.
I agree 100%. The jump from a simple car to a fully working suspension reacting off physics is major. The more you work with complex models like this, the more you understand them. This is not an easy subject at higher levels. I started off with easy cars, then started working with the higher models. Now I can make the whole thing from scratch. Well worth the time spent to learn a few techniques I wasn’t versed in to start with.
Using open source chassis in your or someone else’s game is a bannable offense in a few discord servers, and if you get banned from these servers then its pretty much impossible to find commissions
and also you can’t really learn anything from these open source chassis scripts, some of them are 600+ lines and hence it’s really difficult to understand if you have no idea what you’re doing