100 mile range battery - that’s about 30kwh or a whopping $1500 worth of battery cells. ICE won’t be able to compete to this.
Also that’s just cell cost. It takes quite a bit to assemble a pack, plus profit margin.
p.s. I doubt that rumour, unless Hyundai really likes to milk their customers. Teslas largest packs are less than 20k. Small ones less than 10k (which is how much I save per year because power is cheap and gas is expensive here).