This is a lineart of a classic car depicted in dark green almost close to black. This is originally titled "rumble seat". This original image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. you can see the source URL in the below comment.
經典車
car、classic、lineart、Pearson-Scott-Foresman、yamachem
汽車、經典、藝術線條、皮爾森 - 斯科特 - 福爾斯曼、Yamache米
資料來源：openclipart ( https://openclipart.org/ )