Take the duvet off your bed and put it over the windscreen of your car. Now get in it and drive. There you go - you're a driver in the World Rally Championship tackling the sixth stage of last week's Catalunya Rally.
Actually, don't do that. It would be silly.
And silly is what most drivers thought the dark run through the Les Garrigues stage was in Salou last Friday. We weren't exactly in unchartered territory here; when the Acropolis Rally organisers ran the Nea Politia stage at 9:30 on a Saturday night in June, there were cries of dark, dusty derision from almost all the drivers. But that was nothing compared with the outrage that greeted the Royal Automobile Club Catalunya on the Costa Daurada last week.
The drivers were incensed at the conditions they had to drive through, with dust apparently making it impossible to see beyond the end of the bonnet.