Way way back in time, ( C. 1963) NSU gave us the RO80, it was a highly modern car for its time, much like an Audi, who coincedentally bought them out....
i digress, the RO80 had a rotary engine, a twin rotor 1100cc(Nominal) producing 80 hp, hence RO (rotary) 80 ( 80hp), brilliant eh?. anyway, the engine was too advanced for its time and the technology to produce reliable rotor sealing tips just wasn't advanced enough, they soon wore out in as little as 10k miles, and the point of this ramblings is that RO80 owners when passing another RO80 owner, would hold up a certain amount of fingers to denote how many engines they'd had replaced under warranty,,, the warranty claims bankrupted the the company, and Audi bought them, who quite soon after gave us the Audi 80, i believe one RO80 owner had 5 engines replaced under warranty, but the norm was 2 or three.
In todays less polite world, i wonder which way round the 'one' or 'two' fingers would be displayed??? LOL
P.s . Some RO80's live on with more modern Mazda Rotary engines in them, also possible to find Ford V4's in them, popular period conversion....