No, it’s not. Jet fuel does not have lead

Small propeller planes use leaded fuel

Actually , one of the proposed solutions to leaded fuel in propeller planes was to see if you could modify the engines to use jet fuel

They are worse on the environment then gasoline cars due to the rare earth materials needed to make a EV and it is harsher on the environment when it comes to dispose a EV once they reach end of life.

While it's typically true that making an EV car has more environmental impact than an ICE vehicle, this is more than compensated for by the emissions while driving, says also the EPA. Additionally, new LFP batteries are taking over the EV market and do not require rare earth minerals.

And all a EV car does is demand energy from a power plant which are either using coal or natural gas for the most part. The only "green" efficient power plant option out there is nuclear but no one wants to go nuclear.

Yes, let's just ignore hydro, solar and wind power altogether. Renewable sources are currently almost 25% of US electricity production (more than coal) and growing rapidly. Also, even if you charge the EV with energy from a coal power plant, it's still better than a gasoline car. The reason is efficiency. Power plants are more efficient at getting energy from fuel than a car engine, and electrical engines are more efficiently converting energy to motion.

If your concered about the climate and want to take that into account when getting a new vehicle. I always tell people to buy a used vehicle since it already exists and by driving a used car

This is not bad advice, but even better would be to buy a used EV.

Do you have a source for thinking that over the lifespan of the vehicle, that an EV is worse for the environment than a gasoline powered vehicle? Because I have multiple studies referenced in this article from the EPA stating the exact opposite.

The advantage of using an electric powertrain over any other is that the energy can be produced by any source of energy. Yes, right now, a lot of that’s coming from coal and natural gas, but even then, those power plants are WAY more efficient than the gas engines in cars and produce FAR less greenhouse gases source. Also, as countries transition from coal and gas to solar, wind, geothermal, and most critically and hopefully nuclear, the way the energy makes it from the earth to our cars can remain the same: the power grid.

Also, if everyone buys used cars, then that’ll solve the problem? Where do you think used cars come from? You think we should just keep making ICE vehicles and burning shit when we have plenty of new technologies which are being developed at breakneck pace that could actually make a huge difference in reducing emissions?

All of that is wrong except the bike or public transportation:

https://www.epa.gov/greenvehicles/electric-vehicle-myths

Lithium is not rare and is largely mined in areas with no life at all. The US gets most of its lithium from the Atacama Desert in spots where there has never been recorded rain. Cobalt is more rare but that is being phased out in newer batteries.

As for emissions, an EV is better over its lifespan even if it is charging up from 100% coal energy. The breakeven point for that is about 85k miles. With your typical energy mix, it is closer to 20-30k. Even buying a used car does not win when it comes to emissions over its use unless you are planning on driving it less than 85km.

https://youtu.be/6RhtiPefVzM

For electric planes, they are already starting to do smaller ones with a short range. Solid state batteries will allow for much larger ones.

Nuclear is not the most green energy source. It is significantly better than fossil fuels but it is still pretty far behind both solar and wind with energy storage.