ok im pissed, where the hell do you find the ice cream trucks, and the security vans, i cant find the bloddy things to send to the garage on the docks.

Ice cream trucks are one of the safe houses you need to buy (atleast in Vice City). Not sure if that is the same thing you are talking about...

well in gta 3 sometimes this is rare if u drive around that place with, long time since i played it cant remember the names of places. but the drive around the pleace near to where the one armed black guy lives u can get ice cream vans once in a blue moon there. or do it the way i did it. on a mini mission u have to find an ice cream truck i just stole that and took that to the garage. u fail the mini mission but its worth it.

What's the name of the mission?

If you tell me this, I can help.

it isnt a mission it is a side quest when you fill out the garage carlist.

Do several fire or vigilante missions you'll eventually get one - for the ice cream truck anyways

The security cars drive around randomly....

Not sure about the ice cream truck. It's easy to get in Vice City, but I forgot how to get it in GTA3...