Okej! I got it now! Use your super boost! Turn your car upwards from were you start until you see a tall bulding. Follow it to the top and you will see what looks like oblong pillar on the roof. Go behind it and you will also notice fire barrels coming out of nowhere. Follow it down you will notice one-two zombies standing on a pillar with two ways to take, right or left. Take to the right and before you go down there be sure to press that boost button and it take some time to regulate the car's directions to get to 150.
Comment found on Earn to Die 2: how to go 150mph with a fire truck in mission mode
Max speed tops on 120 mph then how can i hit a zombi at 150 mph
Comment found on Earn to Die 2: how to go 150mph with a fire truck in mission mode