Thread:Mike458/@comment-27524282-20160614024739/@comment-25051390-20160614211207

Wrecking has no direct effect on condition. Still, since wrecks cost valuable time, you could lose an extra light or two as a result of the extra time spent on the track.

As for all that money, likely Double Credits and Car Mastery. In particular, challenge 15 of the McLaren 675LT, which pays roughly per race (before applying the Double bonus) and can be finished within 50 seconds with sufficient skill alone.