Mad Eyes by Kenneth Robeson — Read

WHILE Inspector Higgins was making a general nuisance of himself on the old Boston Post Road, Professor Lanidus Spargrove was sitting dejectedly in the office of his laboratories.

Inspector Higgins was getting nowhere. All he was doing was snarling up traffic. Inspector Higgins now suspected every innocent motorist of being the notorious Doc Savage. He had heard many reports of the bronze man's ability to disguise himself.