The races have evolved and changed substantially since 1973.

First place gets 25 points; second place gets 18; third place gets 15.

The FIA also organizes the World Rally Championship.

Teams use older cars in this event, which is also know as classic rallying.

The four-cylinder specification applies to every car for the purpose of fairness.

And most of that 250 miles is traversed at breakneck speeds.

He drove for Saab and finished first or second in nearly every race.

The specified engine displacement is 1.6 liters. They are turbo engines, too.

The navigator relays detailed messages throughout the race.

They are so short that each team's time is often nearly the same.

Drivers rely on their experience and instincts to maintain control.

Detailed notes on the course are critical to the team's success.

Three hundred horsepower is a lot for lightweight cars.

Engineers will strip a factory-made car to its frame and then rebuild it, which can take about 500 hours.

Between stages drivers guide their vehicles to the start of the next round

Most street cars are nowhere near fast enough to go from zero to 60 miles per hour in five seconds.

The TSD rallies are often held on public roads and don't require high speeds.

There are three: the Junior World Rally Championship, the World Rally Championship 2 and the World Rally Championship 3.

Race organizers work with police to keep traffic off of the race route in a stage rally.

Rules for the World Rally Championship 2 cars are different than that of the other two racing classes.

The maximum diameter of the restrictor is 32 millimeters. Restrictors limit the maximum output of turbocharged engines.

Drivers accumulate points at the end of each of the 13 rallies.

Handbrake turns send the car into a slide. Controlled slides are a critical part of rallying.

The technique involves hitting the brakes and gas at the same time. Done properly as a driver enters a turn, it allows the engine's revolutions per minute to jump and pull the car quickly onto the straightaway.

Aggressive drivers routinely send their cars airborne when they reach hills.

It's now known as Rally Finland.

The technique uses inertia to fling vehicles around curves quickly, but it's also hazardous and can cause rollover.

Power is decreased but engine torque actually increases above 5,000 revolutions per minute.

It harnesses inertia to help drivers take corners faster.

The dusty rally is held on rocky mountain roads.