keyword

when did cars become common

Monthly search volume and cost-per-click data for "when did cars become common" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=when+did+cars+become+common&country=us" +--------------+------------------+ | volume | 1,600 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
when cars were invented	18,100	$0	14/20
when were cars invented	18,100	$0	14/20
invention of the automobile	4,400	$0	15/20
the invention of cars	3,600	$0	15/20
when did cars become popular	390	$0	16/20
when did automobiles become popular	390	$0	15/20
when were cars popular	90	$0	16/20
what year did cars become common	70	$0	17/20
when did cars get popular	50	$0	16/20
when did cars become widespread	40	$0	16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=when+did+cars+become+common&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt