Martin Gray (Paul Kelly)and Dan Holden (Russell Hardie) are rival race-car drivers, and both crash in a big race and decide to give up racing and become partners in an auto-repair business.... See full summary »





Cast overview:
Paul Kelly ...
Martin Gray
Pat Corey
Russell Hardie ...
Dan Holden
Leo Curley ...
Logan - Crooked Politician
Walter Fenner ...
Hart - Crooked Politician
Earl Mitchell ...
Parts Salesman


Martin Gray (Paul Kelly)and Dan Holden (Russell Hardie) are rival race-car drivers, and both crash in a big race and decide to give up racing and become partners in an auto-repair business. Pat Corey (Marguerite Churchill'), a reporter on the local newspaper,has been Dan's girlfriend but she falls in love with Martin. The latter refuses to accept any city-repair work which involves kickback payments to a couple of crooked politicians, but DAn is apparently willing to do so. The politicians plot to split the partners by showing Dan that Martin is romancing Pat. Written by Les Adams <>

Plot Summary | Add Synopsis




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Release Date:

21 June 1935 (USA)  »

Also Known As:

Thru Traffic  »

Company Credits

Production Co:

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Technical Specs


Sound Mix:

Aspect Ratio:

1.37 : 1
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Did You Know?


This film is one of over 200 titles in the list of independent feature films made available for television presentation by Advance Television Pictures announced in Motion Picture Herald 4 April 1942. At this time, television broadcasting was in its infancy, almost totally curtailed by the advent of World War II, and would not continue to develop until 1945-1946. Because of poor documentation (feature films were often not identified by title in conventional sources) no record has yet been found of its initial television broadcast. It's earliest documented telecast was Sunday 19 December 1948 on WATV, New York City. See more »

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User Reviews

A Perfect Circle
25 July 2010 | by (Konstanz, Germany) – See all my reviews

The Perfect Circle Co., manufacturer of piston rings and related car parts, is now part of the Dana Holding Corp., as Wikipedia tells me. Why would I look up such detail? Because with "Speed Devils", a.k.a. "Thru Traffic", Perfect Circle managed to leave a (smaller) monument in film history.

This film was sponsored by them, very openly: beginning from the first title card, over some of their posters, products and brochures on display, up to the final "gag" of the script. The message is brought home more than once that it's better to use quality parts in a car - it could even save the life of the heroes.

The story deals with two race-car drivers who collide in an accident; running an auto repair shop; corruption in politics and investigative journalism; bits of romance in a triangle... quite a pack for one hour runtime, one might say.

All in all, I found it well watchable, and the twists and turns of the plot were often interesting. I'm not sure why Perfect Circle sponsored this film, but I'm glad they did.. and that the film survived the 75 years since its making in quite a good visual shape (sound isn't so hot, but this was still an early sound movie), and is in the public domain now and freely downloadable from - a real treasure chamber for mostly American movies of the 1930s and 1940s.

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