I think it started inb the year 2000, when autorickshaws of Bangalore, the drivers of which love to add little touches to their vehicles, started adding the number “2000” to the back of their autosM
Many autos also like to call themselves “Volvo” or “Innova” to their vehicles, and they would add the engine capacity (1000 cc or something like that) to it.
The two practices got united, and messages such ast “2000 cc”, “2001 cc” and so on, and I’ve seen this go up to “2012 cc”, here. I’m looking out for later years!