Full title reads: "London. Miniature Motoring. A real 'baby' car - all-British - makes its debut on London streets."
Three men look over a miniature car - it is 1/2 a metre high. One of the men describes it's features. CU of wheels and engines and breaks.
One of the men gives the car a go - we see him driving in traffic.
Two of the men discuss using it in traffic. One suggests trying Piccadilly.
Shots of the miniature car being driven in heavy traffic in Piccadilly Circus.