I'm new to EVs and I'm wondering how those EREV things work on long drives. Like, when the battery dies, does the gas engine just kick in and keep you going? With the Scout, they say you can go 500 miles with a full tank and a full battery. But what if you're completely out of both? Can you just fill up the gas tank and still get 500 miles, or do you need to charge the battery too? I don't really know how the Harvester system works, but if any EREV owners could share their experiences, that'd be awesome. Specifically, I'm curious about how much range you lose if you can only fill up the gas tank.