I bought one for myself and asked my 15 year old grand-daughter to assemble it for me. She was mechanically minded and interested in cars. With the help of her dad she assembled it and got it working - and I never got it back ! Shame; it was made of perspex and you could see everything moving. It was driven by a battery fed electric motor and the spark plugs even lit up at the right time. G/d later went to college and got an HND in mechanical engineering. She is now employed as a maintenance engineer.
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