Art of Rally

This was a bit of a pain to unlock, but with some practice, you can get this easily.

Start a custom rally with kenya as the location. Also, set your damage level to none, as one hit with the rocks or houses at high speed will result in terminal damage (although feel free to turn it back on after getting the achievement so you can get the samir achievement.)

Choose lake nakuru as the stage for the rally and choose the fujin for your car, located under group a. After turn 3, you'll enter a somewhat straight part of the course with a slight curve. try to stay on the road and don't go off track into the grass, as you won't have enough speed in the end. If you don't reach 200km/h by the next turn, turn around and start again from turn 3. It took me around 5 tries, but once I was familiar with the track, I got the target speed.

If that doesn't work for you, there is an alternate method you can try as posted by exactor it:

Quite simple to do, can be done almost anywhere in the game with a long straight road and a fast car.
Start a custom rally and select damage to severe (if you're also going for the Samir achievement), choose the Fujin car under group A and start a track with a large straight road in it, try to stay on the road and get to a high speed and this achievement will pop.

A recommended level would be either Kenya (Lake Nakuru) or Finland (Haapajarvi)

You can get this achievement and the Maximum Attack achievement at the same time by following this video guide

To get this achievement, I chose selected: custom rally - kenya - karura - afternoon -group a - the fujin.

Start the rally, you'll cross three bridges in the first couple of minutes of the stage. As you turn left heading to the fourth bridge (with bright green 'petrol' banners on it), mash that accelerator pedal.

With the fujin you should quite easily hit 200 km/h before the next left turn. If not, just turn around and try it again.

Enjoy!

Custom Rally
Kenya
lake nakira
group a
the fujin
Take the first two tight corners and then floor the accelerator on the long straight. You'll hit 125mph as you almost hit the spectators. In my opinion this is the easiest place to do this Achievement, took me three tries approximately one minute.

In my opinion, this is the easiest way.

Location: Kenya Free Roam
Car : fujin

From the starting point, turn left at the first crossroad and go around the circle there to the starting point.
Then go around the last corner back to the starting point as fast as you can (at least 60km) and drive straight from there with full throttle.
Even intermediate racers can keep full throttle on these corners, so as long as you don't stray from the path, you're sure to go over 200 kilometers.

Start a Custom Rally with 1 race on Kenya, Lake Nakuru. Select the Fujin from the Group A car class. After a few corners on the track, you will come to a mostly straight road. Try your best to stay on the road and keep your speed up to reach 200 KM/H.