How fast should I drive on the highway to save the most electricity?

How fast should a Toyota Coaster go on the highway?

Is the Peugeot RCZ suitable for highway driving? If I drive it on the highway, will it cause excessive wear and tear, making it not worthwhile?

How many kilometers should I drive before changing the tires?

I want to ask how fast this car can go at top speed on the highway.

The mileage is 110,000 kilometers. Should I replace the thermostat? Will it save fuel?

I currently drive an eight-year-old Nissan Sunny 1.5 with a fuel consumption of 6.5 L/100km and have driven 50,000 km. I have a parking space at home where I can install a charging station, and I don't drive much on highways. Is it necessary to switch to an electric car? My main considerations are saving money and having shelter from the elements. I don't drive the petrol car much because I don't need to and the fuel is expensive, so I prefer using an electric bike. It would be different if I switch to an electric car, right? What car would you recommend?

How fast can this car go on the highway if there's no speed limit? Does anyone know?

For home use and occasional highway driving, should I go for the 009 or the Buick Century? Any suggestions, everyone?

How fast can a four-wheel drive (4WD) go on the highway?

How fast can a 2017 1.4T go on the highway? Can it reach 140-150 mph?