The average family had 1 vehicle in the 1940s.
good cars
Cars, trains, planes, boats, airships, to name a few
Of similar sizes, but different shapes, to cars today. Not so many 'mini' style cars in the 1940s.
bmw
not very
Cars were fairly common at this point. In Germany they were working hard on the Volkswagon, or 'people's car'. There are lots of great sites about the 1940s. It won't be too difficult to look up some more about this era.
ugly cars
Cars and carriages.
Awesome cars that went bang when they hit something instead of crunch
go to msn Encarta.com for answeres to your question.
Google "1940's automobiles".
There are too many people to count that have cars now. Out of 100 people, 95 would most likely have cars.