Megan Lopez and her brothers grew up riding motorcycles and four-wheeled all-terrain vehicles known as quads.

Source: https://www.sandiegouniontribune.com/news/public-safety/story/2023-02-19/death-of-25-year-old-woman-in-off-road-crash-in-ocotillo-wells-prompts-push-for-safety-improvements

Plus with each wheel responsible for a third of the ride quality, any issue with ride quality on one wheel will be more magnified than on a four-wheeled vehicle.

Source: https://www.fark.com/comments/12725920?utm_source=feed&utm_medium=comments&utm_campaign=fark

The sport involves either two or four-wheeled carriages pulled by a single horse, a tandem or four-in-hand team.

Source: https://www.dailymail.co.uk/femail/article-12353733/Lady-Louise-Windsor-19-pictured-wheel-Volkswagen-Polo-heads-carriage-trials.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

They’re also more suited to today’s consumers, being four-wheeled, multi-passenger and traditional sedan style.

Source: https://www.theolivepress.es/spain-news/2023/04/07/driving-on-sunshine/