I did find the setting to change the distance but at least in the Highlander there are only two settings. I presume it's something like 3 seconds vs. 2 seconds.
What's strange is that even though there is a proximity sensor for the cruise control, there is no parking assist feature, or at least something to tell me how close the car is to the garage door. You'd think they'd load that piece of software since the hardware's already there. (Ok maybe I do need to read through the manual, but you'd think that'd be on by default.)
Also:
https://www.fordraptorforum.com/threads/automatic-software-update-bricked-my-truck.96624/