I got this achievement by also trying to get
(i didnt use their guides) the 3 spots where the FORD F-150 SVT RAPTOR can be found is in:
1. Fairhaven Central right before a ramp and billboard
2. Callahan Industrial by a repair shop
3. Downtown on the right side of the pier entrance if you're facing it
If you start the LIBERTY PARK - AMBUSH challenge you start off being pursued with unlimited time. Just keep taking out cop after cop you will eventually get Mauled and this.
SN: When you try to go through the SUV road blocks SLOW DOWN for some reason you crash your own car at high speeds. If you have unlocked reinflated tires you can go for
after heat level 3. Also make sure you try and stay off of heat level 6. Swat trucks are used to make road blocks and can't be smashed through.