An interesting feature on BBC TV about certain roads in Sweden that charge electric cars when on it (like trama). But can someone explain to me why simply travelling doesn't charge the batteries? It does in petrol cars, doesn't it? My batteries get recharged as I drive and (nearly) always have done. That's why, normally, I don't have constantly to recharge my batteries. So how come that same or a similar system can't be built into electric cars? Answer please, Elon.

Not sure if this is a wind up or a serious question. I'll assume the latter and answer

Batteries and petrol are energy sources. Recharging your batteries in a normal car just transfers energy from the petrol to the battery. In a petrol car the battery is used for very limited functions and isn't used to produce motion so it doesn't require that much energy to be transferred.

All batteries are not equal, just in case the next question is, why can't I run my car on a set of AA Batteries

The technology does not really exist yet. Also if electric cars did charge themselves people would not need to buy cars frequently. Give it time there be a mileage tax and 15 minute cities.

bookmygarage.com/electric-vehicles/why-c...s-charge-themselves/

Blue Boy wrote:
Not sure if this is a wind up or a serious question. I'll assume the latter and answer

Batteries and petrol are energy sources. Recharging your batteries in a normal car just transfers energy from the petrol to the battery. In a petrol car the battery is used for very limited functions and isn't used to produce motion so it doesn't require that much energy to be transferred.

All batteries are not equal, just in case the next question is, why can't I run my car on a set of AA Batteries

Am I right in thinking that the most eco sound way to run a car is by using recycled vegetable whatnot instead of petrol?