Faster speeds: I haven’t heard anything about electric cars driving faster, but it doesn’t really matter since highway speed limits are way slower than the maximum speed of modern cars.

Longer range: Electric cars currently have a significantly shorter range than gas cars since batteries are less energy dense than gasoline. Either battery energy density will improve or we will switch to hydrogen instead.

Cheaper: Most electric cars are much more expensive than a gasoline car of equivalent specifications.

More quiet: You are correct on this one.

Less maintenance: There are less moving parts which usually equates to less maintenance, however the massive cost of replacing the battery every ten or so years will eliminate any advantages in this area.

Better for the planet: It depends. If the grid is using mostly renewables and nuclear then yes, but if the grid is mostly coal then it won’t be better for the planet. Plus you also have to account for the environmental issues regarding creating and disposing lithium ion batteries.

No social tension: I don’t really know exactly what you mean by this, but it electric cars won’t magically solve climate change or something.