We all know that the vehicle rules, chase combat in particular, failed their crash test right out of the gate. Even the most rudimentary application of search-fu will provide a bottomless well of questions, complaints, and homebrewed jerry-rigs. I'm not here to start another thread lambasting them, or to ask for nebulous and theoretical fixes-- I'm curious as to how you fine folks actually handle them at your respective tables.
I tend not to use them at all. Thus far, there have been no vehicle-based situations in my campaign in which the players would feel extremely cheated by letting most of their actions be adjudicated solely according to GM fiat, so we typically just freeform our chases, with the players declaring their actions and me taking all the drivers' pilot rolls and vehicle stats into account to help decide the scene. All vehicle and drone mods have to be cleared through me, and I don't allow overmodding.