Solved TGF-500: Ferrando Ariete, NSU 250cc engine, 1954.

[oko94]

Was the customer a hotel / holiday resort ?

[targhediferro]

Not an Hotel/resort vehicle!

[pnegyesi]

was it used to distribute some kind of goods?

[targhediferro]

Not properly goods, I'd say it was used to distribute services.

[pnegyesi]

used by the mayor's office?

[targhediferro]

Not used by the major's office or for other political pourpose.

[pnegyesi]

was it used to carry newspapers? I feel I am missing something here

[pguillem]

Was it used for delivering food ?

[oko94]

Was it used by a plumbing company ?

[targhediferro]

Not newspaper, not food and not plumbing, but one of these answers is closer to be right than others.

[pguillem]

For a circus ?

[targhediferro]

Not a Circus.

[oko94]

For a garage / repair service ?

[targhediferro]

Not garage/repair service.

[pnegyesi]

Was its use related to city lights?

[targhediferro]

Not related to city lights, but you're on the right path.

[oko94]

Used by an electricity company ?

[targhediferro]

Not an Electricity Company.

[oko94]

Used by a road repair service ?

[targhediferro]

Not road repair service.

[oko94]

Made for a radio/TV channel ?

[targhediferro]

Sorry, neither a TV or Radio Channel.   A little clue:  Plumbing service and Electricity Company are, in my opinion, the closest replays...even if the company we are searching for had no relation neither with water nor with electricity.

[Oguerrerob]

Gas?

[oko94]

Made for a locksmith ?

[Bill Murray]

Was the vehicle possibly used for "animal control"?
Bill