What car is most used in China?

Okay, I don't have a single definitive "source material" for this, as the most popular car in China can fluctuate and data is scattered across various reports. However, here's the general information I want you to incorporate, keeping in mind the goal is to create original content:

• Focus: Electric Vehicles (EVs) are increasingly dominant.
• Likely Contenders: BYD Song series, Tesla Model Y, and other popular domestic EV brands (e.g., Aion, Hongguang Mini EV, etc.) feature prominently in sales figures.
• The Challenge: There's no single, undisputed "most used" statistic. Sales figures are easier to access than total number on the road/most driven.
• Therefore: The excerpt needs to be framed carefully, acknowledging the difficulty of definitively answering the question directly while highlighting the current market trends and key players.