Take six chefs, two artists, two technicians, two culinary staff members, and five young volunteers. Give them 15 kg of yeast, 14 litres of water, 2 kilos of salt, and 10,800 mls of varnish.  And what do they come up with? A full-sized Formula 1 car made entirely of bread. This little enterprise, currently on show at a hotel in Singapore, …