With the production of Tesla's mass-market Model 3 now underway, and first deliveries due on Friday, electric cars are about to hit the mainstream. For people driving EVs, it means a raft of changes: plugging in at night instead of hitting the gas station, keeping an eye on a battery meter instead of a fuel gauge, and most importantly, a change in the way they drive.

To get the maximum benefit out of driving an electric car, the accelerator (you can't call it a gas pedal anymore!) controls both the speeding up and slowing down. Pressing the pedal makes the car go, as usual, but lifting your foot makes the car slow down, hard, not coast.

It's a quirk that takes some getting used to. At first, it can feel like the parking brake has been accidentally left on. But most drivers eventually prefer it because it makes inching forward in traffic much easier than swapping your foot back and forth between pedals.

In a conventional car, brake pads clamp onto a metal disc, with friction converting the kinetic energy of a speeding car into wasted heat. But when electric cars slow down, the electric motor runs as a generator, recovering some of that previously wasted energy to top up the battery. Depending on how much regeneration the software engineers allow when designing the car, the force can be powerful enough to slow the car most of the way to zero, meaning drivers only need to use the brake pedal to come to a full stop.

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