I was hoping for something like this; however, when I click on his (or any other's) avatar, I am not presented with an "about" option to click on. Did you have to do anything special to get that option to appear?
In addition to his usual avatar info there are some stats and a place to click "follow" and "message". The 3 dot menu only contains the option to "ignore"
Also, the full signature is hidden unless I click on it, but I vaguely remember someone mentioning an option to force the full signature to always display.
I suppose I should be adding my ride to my signature for the time being.