Rushing on the road is not recommended for anyone since that is when accidents happened. Whenever driving your car on the road, it is better to take it slow. But, not to slow, just slow enough that you would be able to hit the brake for some possible emergencies.
However, in this game, that won't be possible as the idea here to drive your car as fast as you can. Be on the lookout for cars as they almost look the same as those power-ups when you are driving fast. Grab some booster, life, and some points while driving. Avoid colliding with other cars as that will damage your car. You already know when your car takes too much damage.