Here are some more resources I found:
The basic roblox tutorial car on the dev forum article using Constraints method, the drive script is worth checking out:
Control mechanism I found, it’s a better solution to the while true do loop(can get laggy since it always runs) of the Roblox default tutorial:
This thread has some pretty interesting formulas to apply for suspension:
This thread also has a list of possible ways to script a car:
Overall, look through them and decide which one is best for your purposes. Good luck applying and further improving your LUA skills!