To get leo out safely go to the balcony and leo will tell you to get some sheets. Go through the room with the pool table and go in the first door on the left. There is a barrel of clothes. Walk up to the barrel and push take sheets.
1st,the Smith Thunderbolt, they are spawned in random places, but you can find one in the begining of chapter 14.(it's the car that joe takes to pick you up.)
2nd, the Alcot Bailey, you don't often find it spawned around town but you can find it in the drive way of leos house.(it's the convertible.)
3rd, the Walter Rocket, it is not often spawned. Very hard to come by. You can find it on chapter 11, when you go to warn leo it in the same general area as the restrant you leave from.(it's is the fastest car in the game when super tuned.)