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6

Drive by wire systems have no mechanical connection between the input decive (like a throttle/gas pedal) and the output device (like the engine). They use only electrical signals. To my knowledge there aren't any cars that use this system for steering. Your steering wheel is mechanically connected to the front wheels but is assisted by an electric motor. ...


5

Bit of transmissions 101 First gear makes the most torque / power, but has the lowest top speed and worst fuel economy. Top gear has the highest top speed and best fuel economy, but the least amount of power and torque. In an auto, leaving it in D is fine 99% of the time unless you need more power. Shifting into 3, 2, or 1 typically limits you to that ...


5

In a perfect world from a physics textbook, you might be able to ask the question you have, and expect to compare time vs. engine speed, but there are many more factors in the real world. The speed-agnostic measure is Miles Per Gallon (or l/km). Speed doesn't appear in the name, because it doesn't matter. At higher speeds, things like wind resistance and ...


4

A lot of that depends on the type of vehicle, and your definition of 'fast'. Take this with a grain of salt, but a while back BBC's Top Gear did a test involving a V8 powered BMW M3 and a Toyota Prius. The Prius was driven as fast as it could go around their test track, while all the M3 had to do was keep up. After a few laps, the Prius had done ~18 mpg, ...


2

When you say "stopped dead in its tracks" I assume you mean with the wheels spinning. In this circumstance your choice of gear selection in an automatic is pretty much meaningless. What you generally want is less torque to avoid wheel slip. In a manual transmission you could use a higher-than-normal gear to some benefit, but such a feature is generally not ...



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