It looks to me like the old fire truck took off down the street rather quickly. Even 2nd gear looked impressive. I've driven some old C50/C60 trucks, and they were real slugs.
Too bad the fan made more noise than the engine.
I've seen the Blsato's site. I hope the car looks better than the drawing.
The old Dozer is cool. Good for him that he's putting it to actual use.