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Why in the Steam version Automation save the cars automatically?

This is an inconvenience, because, for example, when I need to try a new body or a new fixture, I need to modify some car and change version, but creates a file that I need to erase, or make a new car, and creates a file that I need to erase: the same when I need to change the name of the car after finishing them.

And please, change the colour of the model/version bar, because the same colour confuse me when deploy the car models tab.