To unlock this car in free ride all you have to do is complete the third mission (The Running Man).

This mission can be hard if you don't know what to do.

1. Start running the way the compass points until you see a green arrow pointing down an alley.

2. Take the alley and follow it around until you are back on the road.

3. Go left a bit then follow the road upwards until another green arrow is in your sight.

Again take this alley up the stairs and along the balcony.

4. You are quite near now so watch your health, Simply follow the compass until you arrive at the destination ( Salieri's Bar)

After this when you go on free ride you can choose the beautifully crafted BOLT ACE!!!!!!!!

When on free roaming do not go about 60mph or else the police will come after you if they see you doing it.

I was doing mission 1 and was crusing along about 80mph 85mph and got caught.