https://www.reddit.com/r/VanLife/comments/1avrsbd/rooftop_solar_tracker/
Looks like someone out there had the same idea.
They’re currently selling a packaged system for ~$5k, which is a bit pricey, but maybe worth if you’re full time on the van life. Looks like you could probably fit 2 of these units on a typical roof, obstructions permitting. Alternatively you could do one tracker and one flat unit.
It looks like ground based 2-axis tracking systems can be found for ~$500-1k, you’d just need to bring your own expertise to mount it to the roof and program the controls yourself.
Semi-unrelated: others mentioned painting your van white (which you already have) but I’ll raise you one better - consider painting it with an IR-Emissive cooling paint, e.g., https://i2cool.com/
There’s unfortunately few products on the market at this time, but keep your eyes peeled.
I get the joke, but also I was shocked to see in the article:
Who out there is still running Lollipop?! That came out over a decade ago. You can’t even get Thunderbird through the Play Store because Google Play Services dropped support for 5.1 back in July. I have so many questions.