For Lucky Escape you have to Drift a Near Miss (first Drift and then Near Miss)
Do this 10 times and you get the challenge and a Barn Find Roumor.
A good place with many cars to do this fast is Surfers Paradise
This skill has a horseshoe as IconBarn Find
You don't get the barn find when you allready unlocked the Porsche 356A
the left one is the Porsche