Currently, if a you want to clone a existing vehicle, you need to open the menu, go to menu, then click clone, however, this is time consuming if you want to clone the same vehicle multiple times. I would like to propose adding a key combo for duplicating vehicles. I think ctrl+c would be a good one, as c does not have any ctrl modifier combos assigned to it.
Not saying it wouldn't be a cool idea to add those type of key combo in the menus, but have you considered using macros? Quite a few keyboards now-a-days have either dedicated macro buttons or if not there is plenty of software out there to set up macros on any keyboard\mouse. A macro would allow you to manually set up or even live record keyboard\mouse clicks and save it to where you hit a button\combo and it replays exactly what you want. Just an example, probably not exactly what you would do, but record; hit ESC to open menu, short delay, click the clone button on the menu, short delay, click clone vehicle button, short delay, hit ESC again to close menu. Then set CTRL+C to execute what you recorded.
