Will for sure share that video on April 1
A joke or not, where does the sound come from?
Changing the firing order is of course out of the question without new cams and/or crank.
From a loudspeaker like on a BMW i8?
The sound is from a completely different video - I very much doubt you could generate that kind of sound from an onboard speaker ?
On closer inspection the description says that the sound supposedly comes from (if my googling can be trusted) a TVR engine.
Another thing altogether maybe, but with the right engine and exhaust (a 1.6 from a Lupo GTI, possibly) you can at least make an A2 sound pretty good in real life as well so it's not completely unrealistic I suppose: