If it can, I haven't found it. I have heard some say that they don't get the option. All you have to do is push the back arrow and it'll take you back to your home screen. I do it all the time watching football in the car
its not a problem with the actual car dock app, its the mode the phone goes into when put in the car dock. When that car dock icon is showing in the notification bar the phone does not allow any data connections via the USB port. Even if I exit the car dock app the phone is still in that mode.
If I can disable the built-in car dock mode I might look at other docks to replace it but until then I would be happy with NO dock app. I just need to be able to use the USB port while the phone is docked for something other than jsut charging the phone.
I can definitely set a "trigger" for when it gets put in the dock but no action to take that would prevent the dock mode.
I think that "DockNothing" app will do what I need but won't be able to verify until I get back down to my car. From my desk it appears to work though and I am optimistic.