I have an FIB Buffalo saved at Algonquin safe house.
Didn't use the "Little Lacy Pageant" method, but
I'm sure everyone knows about that method.
Go into the internet cafe, or from the Algonquin safe house PC,
just enter the Little Lacy pageant website, and Niko gets a 4 star
wanted level. 50% of the time the Enforcer vans show up, the other,
the FIB Buffalos show up. I find that one boring.
From a cold start up, I had only an NRG saved at Algonquin safe house.
Did the 4-star cop shop jump, which is a mission all by itself.
After you land, take the lawn ramp carefully to land on the freeway turn,
and head for the safe house. Saving removes wanted levels, but you want
to make sure who's tailing you and sure enough the black cars were.
Go the length of the freeway to the Bohan bridge the hang a U turn, so you can
pull up to the front of the safe house, if more than 2 cops take your parking spot, all the better.
I just pulled up to as forward as I could get, got off, and they showed up pulling in.
When I came out after saving, there was an empty FIB Buffalo. So I got lucky.