An automotive detailer.
You call them drivers.
medicare
Most people still call them cars.
Them people are called mechanics or automotive technicians.
Valet
sanitizing technician
akerlof, adverse selection
not very clean and we the people are responsible for it but we can stil change it by throwing garbage in bins and using CNG in cars
not sure but just use street cleaners....
A ship that carries cars and sometimes people on short journies is a liner. They are quite big, but not as big as a ferry.
a neat freak a clean freak you know whatever
typically, filters are used to clean air in both , however, in cars their also used to clean oil, and homes their used to clean water.