88mph lets go babyyyy

First, change your units to Imperial in the settings - makes your life way easier!

Character : Mr Dismount
Vehicle : Cool Streak
Obstacles : Turbo pads on the 1st, 2nd and last hot spot. (see picture below)
Pose : Default pose
Steering : Default route

To get this achievement, start your car at max speed. The last turbo pad can be removed if the car goes too fast at the end. To me, adding the last turbo pad makes sure the speed is 88mph and not too slow. The car can go too fast sometimes, so make sure to try a few attempts.