@Allergictoironing
what happens with the 1 pedal driving system if a mouse gets in and chews the cable - will the brakes work perfectly?
Single pedal driving doesn’t mean you only have one pedal. You also have a brake pedal with normal friction brakes at the wheels just as capable as in an ICEV. It’s just that you don’t need to use it that often.
In some EVs, in order to start decelerating, you lift your foot from the accelerator and the car doesn’t actually slow down very much (like some automatics) - you have to press the brake pedal to begin the battery regeneration process and put energy back in the battery. If you need to stop more quickly, you press your foot harder on the brake and the friction brakes come in.
With single-pedal driving, you use the accelerator pedal to speed up as normal. When you’re at the desired constant speed you hold your right foot steady (as normal, given you generally have to put some energy in to keep moving against air, mechanical and rolling friction). But if you want to slow down you simply lift your right foot up a little to begin the regen process - you don’t need to press the brake.
At first, it feels a little like engine braking in a manual car, but if you lift your foot further the regen effect strengthens. In a good system, it’s completely progressive - you control the power of braking exactly the same as the power of acceleration, but with just the “accelerator” pedal (it’s really a “power” pedal - positive and negative)
If you lift your foot off completely and suddenly, say to apply an emergency stop, the braking effect of regen hits a maximum and you can stop very quickly, albeit still with the option to hit the actual brake pedal as well if needs be.
Because battery regen delivers next to no braking at low speeds, true single-pedal driving applies the friction brakes at the end, with a parking brake applied once the car is stationary.
As a “belt and braces” type of person myself, I love the fact I have both a high power electrical motor braking the car and a normal friction braking set up. Driven well, an EV does over 90% of its braking with regen, so your friction brakes get worn a lot more slowly (and your wheels stay a lot cleaner)
EV batteries are typically built into the floor of the car and are designed to withstand even quite extreme crashes - bear in mind that the passengers are above them, so that part of the car has to be very strong.
Your worries about electronic vulnerabilities apply to all modern cars. They’re all computers on wheels.