I
I was a truck salesman at various dealerships in the Manchester area in the 80/90s , including Scania, Mercedes and for the majority of the time Leyland Trucks which merged to become Leyland Daf.
And I used to take my 2 daughters to work with me on a Saturday morning and any open days that were held.
And like yourself,they loved it when I would take them for a quick spin in a sleeper cab DAF 95 and they would wave at all the other kids we passed in small cars.
All done while driving on red trade plates.