An easy achievement which you can get as soon as you start the game proper having escaped from prison.
Look at your map, and you'll note a spray shop very close to where you start.
At the north end of the spray shop, a tow truck is parked up. Steal it, and drive it left out into the road. As soon as you see a car drive past, catch up to it and pull in front of it, hitting
when you're aligned with the vehicle to tow it.
Achievement unlocked!If for any reason the truck isn't there, one can always be found outside Dwayne's