Electric cars is an incredibly old Tech (older than ICE, even), since the very first cars invented were electric.
Tesla were just updating an old tech and trying to make it viable (in which they succeeded), by using modern batteries and electric motors instead of what was used in the original EVs.
The innovative Tech stuff was things like automated parking and automated driving. I don't think integrating what's basically a tablet on a car dashboard counts as innovative Tech - it's the same kind of thing makers of "Smart" Fridges were doing - grab old tech, put a touch screen on it and call it high tech.
Without the actual high tech part around automated driving, Tesla is just a company that started in the market for car manufacturing with a strategy of carving out a new market segment by updating to the XXI century a technology from the XIX century that is now cheaper to run and adresses the Ecological concerns of many people - quite a smart and in some ways innovative business strategy but it makes them no more a Tech company than Mercedes-Benz is a Tech company for having invented Electronic Fuel Injection or my local supermarket is a Tech company because they have a smartphone customer loyalty app - merelly using existing Tech, integrating new Tech that somebody else invented with old Tech or even inventing new electronic parts for a specific domain is not what makes a Tech company, IMHO.
That said, the Stock Market will believe any old bollocks and the Startup World has never been this fraudulent (and I say this having been an insider) so you can pass pretty much anything that uses Tech in non-innovative ways as a Tech Company - I mean Glovo is deemed a Tech Company even though their business is basically a booked express delivery business that uses a smartphone app and has some backend integration with sellers - a new combination of existing things, not innovation.