Giancana and his much valued "adviser" had rather dissimilar styles, illustrated by the following: both men were constantly tailed by Federal agents, but when Giancana grew impatient of a car tailing him, he put his foot to the gas and brought about a race between him and his pursuers. Humphreys, however, one day when he had had enough of being followed, got out of his car, sent his driver home, went up to the car that was following him and said: "You've been following me all day. There's no need for two cars. I'll ride with you." (He did just that, and apparently even bought the officers lunch.)