Pixel Traffic: Highway Racing

If you are having trouble reaching 300 points, I have figured out a way to make it very easy to achieve:

You can pause the game just after you crash and wait for a few seconds. If you press esc to "resume" your game when your car is in the air, game will actually resume (and make your car fly forward). At this point, use full speed to reach as far as possible until you crash again (it will be harder to crash since you are kinda flying). Keep pausing the game everytime you crash and resume again as far as possible from the road, until you reach the point you desire.