Since 2007 https://ourworldindata.org/grapher/urban-and-rural-population more people in the world live in urban areas rather than not. I'm not saying it is not your case and thus the question isn't important to you. What I do want to highlight though is that, without any additional context, someone would be statistically right to assume that a complete stranger does live in a city, not on the countryside. Consequently while suggesting the use of SUV making suggestion first for urban population is what would have the most impact.

TL;DR: no idea, it's not the majority of people and the trend or urbanisation worldwide is accelerating.