Good celebrity product endorsement moment: having cool, elegant, sexy actress Kristin Scott Thomas appear on the BBC’s popular Top Gear programme and inform the watching millions that she drives a Reva G-Wiz whenever she’s in London.

Bad celebrity product endorsement moment: having cool, elegant, sexy actress Kristin Scott Thomas go on to tell the watching millions that when it’s dark and it’s raining and you’re driving a Reva G-Wiz, you can have headlights or windscreen wipers but not both.