John Hessin Clarke,
Sullivan v. City of Shreveport…
“ Whether the ordinance of 1907, confessedly a valid exercise of the police power when it was passed, was rendered arbitrary and invalid by the development of a car which it is claimed can be operated by one man with as much safety to the traveling public as, and with less cost than, was secured by the two-man car, in use at the time the ordinance was passed and which was contemplated by it. ”
