I only found what it was on Google, the entry list said Frazer Nash BMW 328, I wondered if it was some sort of conversion, but then the engine size was listed as 2L. The couple in it certainly looked like they were having fun. I’m fairly certain the elderly female passenger In a later Merc was sound asleep, even through the cones.
Strangely, one of the first in the country was registered here in Perth, full story on Google.