Some years back we had a Benz that didnt have a conduction sticker. I found it odd but never questioned it as I felt it may be my fading memory. But last week I saw a S550 driving down SLEX and it also did not sport a conduction sticker nor a specialized plate.
To be honest CATS appears to be conscious about making their just sold car look good by absorbing the cost of making plastic home made plate numbers. As it stands the paper plates that comes out of the inkjet/laserjet looks really tacky. Something you dont expect from a slightly more expensive Japanese car.