Okay so first off I have a car, I want to have a GUI that pops up on the screen in which it displays current speed, and max speed. There will also be a "+" and "-" button that control the max speed. Once you click the "-" button it takes your speed down 5 miles per hour but its not like cruise control which sets your speed, it's thee max speed your vehicle can reach when set on that number. I gave it some attempts but it is not working at all.
There is a "ParentScript"
There is a "FixGUIs"
There is a "GUI"
I do not know how to copy codes into here so I will provide a way to get to the model.
http://www.roblox.com/ Out-for-anyone-that-is-able-to-help-item?id=156532108