The Italeri Motorcycle set. The holes are for locating the crew members. A bit of putty will fill them if the crew is not needed.
The model consists of the body, the fuel tank/handlebars, and the side car, side car tire and side car spare tire.
I don't like the big clunky base and the motorcycle looks better without it. Simply cut off the locating pins on the bottom of the tires and it stands up just fine on it's own.