Could you add a hot-key, which sets cruise control to 9999999999. It would be easier to just hop into a car and press a key instead of accelerating to the maximum speed and pressing 'O' or setting the speed limit manually.

Hi ouk_ouk, do you already use the "Alternative toggle mode for cruise control"?

If this setting is active, simply set up a cruise control limit by pressing CTRL+O and enter "999". If you now press "O", PDA will switch between cruise control "off" and cruise control "limit = 999".