Solar oven/cooking

For context, I live in the tropics and get a lot of sunlight for most of the year outside of monsoon season.

I was recently chatting with some coworkers and one of the mentioned baking cookies on their dashboard during the summer, and I remember my brother mentioning doing that when he lived in Arizona. That is something I could probably do here, but we always keep a sunshade up in our car so it isn't incredibly hot when we get inside.

This got me thinking about solar ovens since I remember seeing a video of someone using one to cook online awhile ago, and I was curious if anyone here has one or has any experience using one and if it was worth it or if they would have any recommendations.