Jack Palance's character has a girlfriend who works at "The World of Suzie Wong Ltd" nightclub - in fact a real place that was situated on the corner of Tonnochy and Jaffe Roads. The truck is Leyland FG, apparently.
Anyway, Palance decides to pay her a visit at the bar and finds her trussed up by the baddies, but before we get there we catch some great late 60's glimpses of the area.
Red truck. Apparently a Leyland FGYes, it was a real bar. Gilman Motors next door along Jaffe Road
The change that has undergone this whole area is, as expected, huge. The girly bars as well as general drinking establishments are still to be found, but the whole character of the area has changed and all these older buildings have been replaced. Check out the modern view of Tonnochy Road courtesy of Streetview.
And here is the view of the space once occupied by the bar and Gilman Motors next door. Note that the Gilman Motors place is now a Volvo showroom, it's more than feasible that the same company that owned Gilmans also owns the local Volvo franchise - that tends to be how things work here in HK.
By the way, does anyone know why Jaffe Road was blocked off in the screencap? I am guessing it may have been a temporary precaution related to the proximity of Wanchai Police Station and the 1967 communist riots in HK?