If my phone rings while I'm driving, I just take it out of my shirt pocket and hand it to my wife without looking at it. She takes the call for me. If I happen to be in the middle of merging or something requiring great concentration, I let it ring, but then hand it to her a minute later so she can find out who called, and call back while I continue to drive.
You need to either explain why I shouldn't be able to do that, or explain how your solution will allow me to continue to do that.
Lee