2015 Mercedes-Benz C-Class: Empty Nest Syndrome Published on August 12, 2014 in First Drives by Alain Morin Photo: Alain Morin The Touchpad is a sort of mouse/keypad upon which you can even write with your finger. Personally, I found this accessory perfectly useless and needlessly complex. Mercedes would have been better off investing its money in a GPS that works properly.