I found that a house rule that I like to use in my games for those who don't really car about their wheels and would have bought a junker if possible. The prices in the BBB are for new cars, so I created a modification for junkers.
20% off the cost- The car has the Flaw Gremlins I for any rolls made with it.
40% off the cost- The car has the Flaw Gremlins II for any rolls made with it
60% off the cost- The car has the Flaw Gremlins III for any rolls made with it
80% off the cost- The car has the Flaw Gremlins IV for any rolls made with it
This could also be applied to other vehicles as well.
So any comments?