The whole appeal of Racing Moto is to hit the road at speeds that simply would not be possible in real life. As a motorcyclist, you must swerve to avoid cars and trucks on the road while achieving ever-increasing speeds.
The more you accelerate, the more points you will receive, but the greater the hazards of careering along the motorway. The other vehicles could swerve left or right at any time, so keep an eye on their indicator lights to avoid nasty hazards.