If there is a highway then you can drive a bike. You will raise the speed and reach speed of more than 120 kph. There is goosebumps when you hike the speed.
If the cars crash at high speed then the accident is fatal.
This is the reason why there are speed limits. There are safe design standard which are used to perform destructive testing.
There are Germans who will push the car test envelope. They decided to crash a car at speed of 120 miles/hour.
Usually, for countries which like Germany follows a car speed at 40mph.