There are 10 bucket list challenges for the Porsche pack, press
and tab using
to the 'Porsche' tab and then select the Porsche Bucket List
option and then press
to set them as your active bucket list so that the cars show up.
There are 2 Easy challenges, 5 Medium challenges and 3 hard challenges.
Of these there is easily 5 that anyone can achieve easily, don't forget if you screw up press
to rewind and when you set off check the challenge to see what you'll need to do (Score points, set a certain speed, get somewhere, etc) and also check your map to look at the route.
Challenges 1, 2, 3, 4, 8 and 10 are fairly easy and id suggest avoiding bucket list challenges number 6 if you're a novice as its very hard without the right route.