I am making a 2 level cake and making a road in the space btween the difference of the first and 2nd layer. I'll make a road there and place the 2 cars there.

Any ideas on how to make the car and tow truck? I have made the car before, but that was as a full sized ca, not a mini size one like I am trying to do. I am thinking of making them out of rkt, and cover in modelling chocolate, but I have never done that before. Also, how do I create the back of the tow truck?-rkt on wires?

Any help would be appreciated!