It's slightly different, that was not a BahnCard 100. Those are only assigned to people outside Deutsche Bahn.

Deutsche Bahn employees can buy for 1 euro a 24 hours ticket to travel any train in German (ICE included) and bring someone else with them for free. That is the ticket for personal reasons.

If the travel is business related, then you always travel on first class to the destination. Among employees is very common/confortable to travel several times per week betwen locations.