What was this hooked to? #541 - Gilmore Oil (ex-Topper) Buick

[Ray B.]

Know what it is?

Please, respond below and tell us what did this trailer contain, and what car used to pull it.
A complete answer, with a picture of the car, is required for a point.

If you haven't registered yet, you need to do so in order to reply with your answer.  You can do so by clicking here.
Also, please be sure to check out our other puzzles, and, please post a puzzle of your own if you'd like - the more, the merrier.

Thanks!

[Ray B.]

All aboard! Next stop: Experts floor.

[Tuckeroo]

The Bohman and Schwartz Buick from "Topper" circa 1936?

[Ray B.]

You might say so, but there is no trailer in "Topper".

Please complete your answer as requested above.
Locked for Tuckeroo 48 hours.

[Tuckeroo]

Assume it carried the speakers and sound equipment when owned by Gilmore Oil...

[Ray B.]

... and most of all a generator to power all this stuff.
Well done.

The reason I was asking for a picture (and you found one) was to show that the trailer only made its appearance in the second career of this car, for Gilmore oil, after it's first minor redesign. Later, things got worse.

The third picture is a still from the movie Topper.

[D-type]

Are these pictures all of the same car?

The grille differs between pictures.  
The registration changes - but I understand that in the States a car doesn't have the same registration number for life.

[Ray B.]

And again, you haven't seen it all.

[Otto Puzzell]

On parade