Longest and Widest commercial land vehicle ever produced?

Question

What is the Longest individual commercial land vehicle ever produced for public?

What is the Widest individual commercial land vehicle ever produced for public?

I want to know the 'non-public transports' like car or van.

Has any one got any idea?

Answer 1

Motor homes have to rank close to the top of the list.

I didn't go looking all over the Internet; but as far as cars are concerned, the Fleetwood or Sedan de Ville from Cadillac (around 1972 or '74 ) was one of the largest passenger cars in the U.S.

It had an engine in excess of 500 cubic inches, and I believe the length of the car was over 15 feet.  EDIT- Whups!  I should have put "20 feet".

Of course, stretch limousines are probably the longest cars out there.

Second EDIT:  The engines were 472 cubic inches.