How do i get free cars in gta online?

The only source provided is the Wikipedia entry for Grand Theft Auto Online, which describes the game's release dates, setting, and multiplayer features. It does not mention any gameplay mechanics related to acquiring vehicles for free, nor does it reference any in-game events or updates that would grant free cars. Because no verified information is available in the cited source, I cannot provide instructions or details on obtaining free cars in GTA Online.