This one is a little spooky. The spirit of the dinosaurs that have died and become the oil we pull out of the ground to produce our fuel. Then, you have the oil barrel on its side leaking the stuff on the ground, polluting the Earth. It’s not overt, but this shirt is saying that fossil fuels had a good run, but they’re no longer viable. The planet is overheating and the oil reserves are diminishing significantly. So, let’s look at some alternatives.
At least I think that’s what Busted Tees is implying here.