Add some luxury features to vehicle designing

[Frankschtaldt]

If I had to implement it, I would make it another button in the vehicle designer. This button will bring up a window full of check boxes. Adjusting the sliders will automatically check the boxes and checking the boxes will automatically adjust the sliders.

If this is how it were to be implemented (ie; not actually changing anything about the way the game works but adding a visual representation of what the sliders mean for tose that want it) I'd be okay with it being included....

.... However, I personally feel it's really not worth the effort. Very little gain for quite a lot of work.