It is known as the Birney Safety car. It was used mainly on smaller city
streetcar systems or on lightly used large city lines. Many have been
preserved and are running today in streetcar museums. One is in
use on a tourist line in Fort Collins, Co. It is a restored car that
originally ran in Fort Collins.
With the 4 wheels it was quite a lively ride however and some
passengers didn't like to use them.