Hybrid and electric cars do not help the environment They still need things like copper, steel, lithium, graphite, cobalt, glass and plastics. These things all need raw materials to be mined, refined, processed and transported. They need road...
Some of these cats may be owned pets that are permitted by their caretakers to go outside unsupervised, some may be tame strays who were formerly owned, but have been lost or abandoned, and some may be feral cats, those with no socialization whose disposition makes them unsuitable as domestic pets.
Feral cats primarily subsist on food scavenged from garbage when it is available to them. They also eat animals they kill, and carcasses of animals already dead. Feral cats living in managed colonies are fed cat food by their caretakers.