I only ever saw a short sequence, bear in mind that this was more than ten years ago. The art style looked elaborate and rather modern, with intricate backdrops and detailed shading. This is what I remember.
Apocalyptic scenes in Japan, people dying from rampant disease as infrastructure and society collapses. A (Japanese?) heroine is seen negotiating for help with representatives from the US. She is confronted with indifference and outright spite. No help will be provided. She proceeds to blast across the pacific in some futuristic vehicle. Cliffhanger ending.
The credits were not shown, because the TV Channel was eager to show ads.
Can someone identify the series based on this scene?