In 1949 did they have car phones?

Question

In 1949 James Cagney starred in a movie called White Heat about a troubled gangster. One scene in the movie the cop recieves a phone call in the car! Did they have technology back then to allow for car phones?

Answer 1

h**l   no   they   didnt  have    car phone

Answer 2

radio telephone

Answer 3

hope these help