I already have a huge audience - looking to launch new projects using it with others

I already have an audience of 15k+ visits per day across 10 websites (all focused on automobile use and maintenance - pre and post-purchase)

What I need now is more ideas for additional sites (I have a bunch of my own that I'm slowly working through) and better monetizations for the current ones

Is anybody here looking into launching car-related apps or websites that would benefit from my existing audience? I imagine it would be a perfect joint venture - I'm looking for new things and YOU may be be looking for a low-risk launch or to grow faster

Open to discussing anything although I am careful about the information I share publicly