The constant blaring of car and truck horns, hoardes of people wherever you look, rainbow swathes of saris and incessant interest in what we were up to.

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The vehicle can then adjust its speed so that it maintains a constant and respectful distance from the car in front.

ECONOMIST: MONITOR

Getting it right means working with engine manufacturers and software producers because changing requirements mean constant updates to ensure that every car meets the standards required.

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Business people need constant connectivity and communication in their car.

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The average two-wheel-drive car carries four such parts, known as constant-velocity joint (CVJ) halfshafts.

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Unfortunately, the price of oil in constant dollars is close to what it was in the car-happy 1950s, and prices are likely to keep falling.

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So all you now have to do is to guess how many cars will be sold in a given year and, if churn stays fairly constant as it has for a long time, then 46% of the new car sales will translate into new satellite radio subscribers.

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The distance is monitored using sensors mounted at the front of the car, and braking or acceleration are applied automatically to ensure that it remains constant, thus reducing the chances of a collision.

ECONOMIST: Cars that drive themselves