Part-time inventor So Fuk-sang may have beamed himself a fortune with an award-winning mirror.
An American and a Swedish car-maker took a shine to the new-look mirror and want it for their vehicles.
Mr So, 40, scooped a gold medal from the Nuremberg International Invention Exhibition in Germany.
No one from Hong Kong had entered the annual exhibition before, let alone win it. But Mr So's rear-view mirror dazzled the judges and car companies alike.
Mr So, a doctor-turned-textile trader and his co-inventor brother, Su Li, who lives in Sweden, spent $3 million perfecting the design and patenting it in 26 countries.
The mirrors are put inside the vehicle and can be put on the dashboard. They are unaffected by mist, snow or rain, double the angle of vision and remove blind spots.