Trailers, Roger Babson speaks

The video discusses the unusual trends in U.S. housing, highlighting the increased use of trailers as a significant factor in the decline of traditional home building, which is currently at 30% of normal levels. It warns that if city and town officials do not change their policies, half of the U.S. population could be living in automobile trailers within 20 years.

What fraction of the population is mentioned in relation to the housing situation?

What is predicted about the population's living situation in 20 years?