What's this then if it's not a "little car"???
As for "non conventional rechargeable batteries," I've seen little batteries that looked like electrical components decades ago, they may not have been Li-ion back then, but they were non conventional in the sense they didn't look like batteries. And, just because this is the first time you've seen these style Li-ion batteries used in a toy, it doesn't mean to say they're not more widely used, as the tech has been around for ages. And that's why I asked what battery you had in your "little car"
And therefore trying to have an informative conversation with you.
So, quite frankly, where you get that I'm being condescending from, I don't know?