It's great to find another car enthusiast here. The car scene on Steemit is currently very limited, which isn't too strange, since the site was made by cryptocurrency people who invited their friends, who invited their friends, and so on. I am, however, positive that once we, the car people invite our friends to Steemit and they invite their friends, it will grow into a thriving community. I believe there are a few accounts here dedicated to promote (upvoting and resteeming) car content. Personally I only know about @buildthreads, which was my own initiative and which curates posts covering car projects.