I have suggested this in the past and thought it was a pie in the sky idea.
Merging the card with the driver’s licence has been identified in the course of the
stakeholder’s consultations as a solution for reducing fraud potential while at the same time
limiting costs (issuing and purchasing of one instead of two documents). Driving licences and
driver cards are issued in credit card format and contain very similar information (driver’s
details, photograph, etc). The driving licence directive already provides for the possibility
of inserting a microchip in the standardised driving licence format. Moreover, both cards have a limited validity period of five years, since the driving licence directive stipulates that, as from 19 January 2013, the licences of truck and bus drivers will be valid for five years.
Finally, the certificate for the initial and continuous training of professional drivers, which
is also issued for five years, could also be integrated into this document, thereby reducing
costs even more. Merging cards would therefore not require any change in the period of
validity of the current tachograph cards and therefore of their durability (as they are handled
on a daily basis unlike driving licence cards). Merging driver cards with driving licences
would facilitate detection at the roadside check of drivers using a card that does not belong to
them or using two cards; however, this detection is already possible, so the impact would
from that point of view not be huge. What contributes however to the reduction of fraud is the
fact that driver’s will be less inclined to let other drivers use their driving licence to fraud the
tachograph system.
This is all likely to happen before 2018, although how you will be able to go for an interview in another companies vehicle worries me 
Sorry I cannot show you my DCPC or licence because it is recording my break outside.
