| Almost all taxi's are that colour. It's called Elfenbeinweiss (Elf Bone White) If I'm correct. Some cars are painted that way and others use adhesives to cover the entire car.
The taxi options list for the B also includes a real sparewheel, and a backseat cover made of fake leather (skay ?).
We don't wear helmets when riding bikes in Europe. Most cities have separate bikelanes. And bikes are protected by law as being weaker traffic participants.
Helmets would also mess up our cool european hair....
Almost all taxi's are Diesels. Diesel fuel is cheaper in Europe then Petrol.
The REST function on the thermtronic that uses the heat of the engineblock to heat the interior without the engine running is designed with taxi's in mind. The driver can heat the car and turn off the engine. | 
