The Model 3 and all other Teslas literally have no transmission gear switching: it's a fixed gearing ratio and true continuous acceleration with no "switching" of gears anywhere. This simplifies the design and reduces manufacturing and maintenance costs.
EVs can do this because electric motors provide torque in a broad RPM spectrum, while ICE engines only operate in a narrow RPM range optimally.
This is technically true, although the reality is that as motor speed increases, the ability of an EV to accelerate diminishes. This explains why a Tesla can pulverise most ICE supercars from a standing start, but at motorway speeds an ICE car can pulverise a Tesla in acceleration (and overtaking).
The other issue no-one seems to have mentioned (surprisingly in this context) is that one of the reasons that a Tesla doesn't need multiple gears is that an electric motor can revolve much faster, as it isn't subject to the same stresses as a 'reciprocating engine' - for those who aren't familiar with this term, just think about the fact that an ICE engine has pistons that constantly have to reverse direction (the word "reciprocating" derives from the Latin, and roughly translated means "to move backwards and forwards"). In an ICE car doing 6,000 rpm (which is a common upper limit nowadays) each piston goes up 6,000 times per minute and down 6,000 times per minute. That's 100 times PER SECOND. The mechanical forces involved in constantly reversing direction like that limits the top speed of an ICE (which is not to say they can't go much faster - F1 cars rev up to 18,000 rpm, for instance, but their engines don't last very long). The ability to produce full torque from zero, a classic characteristic of electric motors, and the fact that the real-life speed of motorcars is limited by the environment, means that multiple gears aren't necessary.
Having said all that, I love driving, and much as I love driving my Tesla, I also get great enjoyment from driving ICE cars, and particularly from driving a manual car. It's like boating. You can go out in a yacht and derive enormous pleasure from using all the tools available to you to get it riding just right, in the right direction, maximising the use of the propulsive force (wind), and so forth, and get huge satisfaction from that. Or you can go in a motorboat and let the engine do (virtually) all the work. So it is with manual cars and automatic/electric cars. In a crowded area, at low speeds, an automatic car / motorboat is so much less effort. In a larger area, they're both great, but perhaps more enjoyment can be derived from using the extra skills that automatic cars and motorboats don't require.
Now excuse me, as I am sitting at the Yacht Club (which I drove to in my Tesla), and having finished my lunch am about to go out on my (motor)boat...
